AR R‐15 5 Jig Inst truct tions s
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ARR‐155 Jig
Insttructtionss
Introdu
If your low
lower jig.
accommo
lower com
For the fi
simple an
risk of fail
For the ex
fabricatio
The lower
pocket, 3
selector).
finish the
Once any
state, and
owning an
tools befo
Modulu
The Modu1. Te
2. Si
3. Dr
4. Fr
5. Re
uction
wer can accom
The Modulus
odate an AR‐1
mpleted with
rst time user
nd easy to use
lure.
xperienced b
n time. Modu
r is easily com
) the fire con
To reduce th
cavity that is
of the requi
d federal firea
n 80% lower
ore using the
us Arms Jig
ulus Arms 80%emplate
de Plate (2x)
rill Guide
ront Support
ear Support
mmodate an
s Arms jig util
15 upper to p
the Modulus
r, the Modul
e process, co
uilder, the M
ulus Arms als
mpleted with
ntrol pocket, a
he fabrication
s first hollowe
red finishing
arms laws wi
in your area.
Modulus Arm
g Part Desc
% Jig kit conta
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AR‐15 upper,
izes standard
roperly locate
s Arms 80% jig
us Arms jig o
ompatibility w
Modulus Arms
o offers indiv
four simple s
and 4) the fir
n time and to
ed out with a
features are
ill apply. It is
. Please make
ms jig to comp
cription &
ains the follow
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, it is compat
dized features
e the templat
g using basic
offers increa
with common
s jig offers un
vidual replace
steps to fabric
re control pin
o improve the
drill bit in the
started, the
your respons
e sure you ar
plete your low
Key Featu
wing parts as6.
7.
8.
9.
10
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ible with the
s within the lo
tes, resulting
hand‐held po
sed safety (n
nly available h
iversal fit, inc
ement parts.
cate the : 1) t
n holes (trigge
e finish, a rou
e first three st
lower is con
sibility to che
re familiar wit
wer.
ures
s shown in figBuffer Suppo
Depth Gauge
Cap Screws [8
Side Plate Su
0. Rear Take Do
August 17,
AR‐15 Jig Instr
Modulus Arm
ower receive
in a universa
ower tools is s
no milling wit
hand power t
creased prec
the trigger slo
er pin, hamm
uter with an e
teps.
nsidered a fire
eck the legali
th the safe o
gure 1 and listort
e
8‐32 x ½”] (12x)
pport Cap Screw
own Cap Screw/N
2014
ructions 2
ms 80% AR‐15
r designed to
al fit. A forged
shown below
th a drill pre
tools, and red
ision, and red
ot, 2) the rear
mer pin, and s
end‐mill is us
earm and all
ity of finishin
operation of p
ted below:
, [8‐32 x ¾”] (2x
w [8‐32 x 1.5”] (2
Nut [1/4‐20 x 2.
5
o
d
w.
ess), a
duced
duced
r shelf
safety
sed to
local,
g and
power
)
2x)
25”]
Fig
Unlike co
on a singl
fabricated
orientatio
the oval h
gure 1: Modulu
nventional 80
e template th
d in one orie
on. The temp
holes allowing
us Arms Jig Kit
0% jigs, all of
hat is designe
entation whil
late is attach
g for a univers
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Contents (in pr
f the features
ed to be used
e the rear sh
hed to the fro
sal fit regardl
Figure 2:
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roduction kits,
s that require
d in two orien
helf pocket a
ont and rear
ess of variati
Template Feat
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short and long
e milling with
ntations (figu
and trigger sl
supports. The
ons in the low
tures
August 17,
AR‐15 Jig Instr
g screws are th
h the ¼” end‐
re 2). The fire
lot are fabric
e side plates
wer receiver w
2014
ructions 3
he same size)
‐mill are cont
e control poc
cated in the
are attached
widths.
tained
cket is
other
d with
To speed
drill guide
number o
CAUTION
all three
upside do
there sho
and not d
covered.
The same
provided
The side
side plate
up the milling
e installed un
of holes in the
N: The drill gu
holes are full
own, the right
uld be seven
drilled). If it
e side plate is
to assure pro
plate suppor
es are placed
g process, ex
nder the temp
e drill templat
ide is not sym
ly exposed w
t most hole w
fully expose
is upside do
Figure 3: Drill
s used on the
oper placeme
t holes are d
in a vice to se
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cess material
plate as show
te, there is no
mmetric and
when correctly
will be partial
d holes (the
wn, both the
l Guild installed
e left and rig
ent for the d
designed to re
ecure the low
Figure 4:
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l is removed w
wn in figure 3
o chance to d
can be instal
y installed as
lly covered by
8th – left mo
e 7th and 8th
d under templa
ht side as sh
drilling of the
educe flex an
wer during the
Side Plate Fea
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with a drill. T
3. Since the te
rill a hole in t
lled upside do
s shown in fig
y the templa
ost in figure 3
right most h
ate in both orie
hown in figure
safety select
nd marring w
e milling proc
tures
August 17,
AR‐15 Jig Instr
he drill holes
emplate only
the wrong loc
own. For the
gure 3. If th
ate. For the f
3 – should be
holes (figure 3
entations
e 4. The rear
tor and the t
with anodized
ess.
2014
ructions 4
are located w
y exposes a li
cation.
e rear‐shelf po
he drill templ
fire‐control po
e partially co
3) will be pa
r takedown h
trigger group
d lowers whe
with a
mited
ocket,
late is
ocket,
overed
rtially
hole is
p pins.
en the
The depth
drill depth
gauge “A”
“B” is use
(depth= 1
represent
for a pass
comfortab
requires a
The follow1. ¼”
2. 3/
se
The follow1. Ro
2. Dr
3. Vi
4. 3/
5. 3/
h gauge is use
h using a drill
” is used to se
ed for the re
1.249”). Pro
ts the top of t
s. The user
ble depth tha
a router with
F
wing parts are” x 4” 3‐flute En
/8” Drill Bit (fire
elector)
wing tools areouter (full size o
rill (hand drill or
ice (drill press sh
/64” Allen Wren
/32” Allen Wren
ed for both d
stop on the 3
et the end mi
ear shelf (de
oduction dep
the lower. E
is encourage
at should not
variable spee
Figure 5: Depth
e required to d‐Mill with 1” D
e‐control, rear‐s
Figure
e required / rer laminate)
r drill press)
hown)
ch (for drill stop
ch (8‐32 cap scr
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rilling and mi
3/8” drill bit a
ll so it exits t
pth = 0.630”
pth gauges
ach hash ma
d to start at
exceed more
ed so the end
h gauge used t
complete theepth of Cut
shelf, and safety
e 6: Optional k
ecommended
p)
ews)
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lling as show
and 2) use to
he bottom of
”). Depth gau
will have en
rk is ¼” deep
1/16” ‐ 1/8”
e than ¼” de
‐mill speed c
o set the drill d
e jig and can
y
kit required to f
d (examples s6.
7.
8.
9.
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wn in figure 5.
set the route
f the lower fo
uge “C” is us
ngraved hash
p and represe
” of an inch d
pth of cut. T
an be slowed
depth and end‐
be purchased3. 19/64”
4. 5/32”
5. 3/8” D
finish the lowe
shown in the 3/16” Allen
Screw)
Philips Screwdr
Front Take Dow
C‐clamp (optio
August 17,
AR‐15 Jig Instr
The gauge is
er depth for t
or the trigger
sed for the f
h marks, the
ents the maxi
depth of cut
Typically, a de
d down for mo
‐mill depth
d as an option” Drill Bit (trigge
Drill Bit (hamme
Drill Stop
er
figure belowWrench (Rear
river (Side Plate
wn (pin, detent,
nal if vice is not
2014
ructions 5
s used 1) to se
the final cut. D
hole. Depth g
fire‐control p
e first hash
imum depth o
and work up
eeper depth
ore control.
nal kit: er slot)
er/trigger pin)
): Take Down
support)
& spring)
mounted)
et the
Depth
gauge
mark
of cut
p to a
of cut
Modulu
Front Sup
results, th
Arm’s fro
in lieu of a
Rear Supp
of the low
screws ca
screws, a
touches t
Figu
us Arms Jig
pport: The fro
he spring and
nt bolt kit (no
a front take d
Figure 8: In
port: Thread
wer (figure 9
an be partial
ttach the rea
he back of th
re 7: Example
g: General
ont takedow
detent from
ot included) t
down pin.
nstall front tak
in the buffer
9), then furth
ly threaded
ar support. M
e lower for p
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of common too
Assembly
n pin is used
the parts kit
that contains
ke down pin an
support (cloc
her turn clock
into the buff
Make sure th
roper alignm
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ols that can be
d to secure fr
t should be us
¼” bolt with
nd use it to secu
ckwise) until
kwise until t
fer support f
he buffer sup
ent.
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e used to comp
ront support
sed install th
h the proper s
ure the front s
the buffer su
he two screw
for additiona
pport is rece
August 17,
AR‐15 Jig Instr
plete the lower
as shown in
e pin. Option
space and wa
upport like an
upport is belo
w holes are
l leverage. U
essed so that
2014
ructions 6
r
figure 8. For
nally, the Mo
ashers can be
upper
ow the rear su
at 12 o’clock
Using the lon
t the rear su
r best
odulus
e used
urface
k. Cap
g cap
upport
Template
screws. F
(figure 10
rough out
need to b
cap screw
Side Plate
right). Th
lower bef
to allow a
fourth ste
accuracy,
e and Drill Gu
or milling, th
0, right). The
t the pocket,
e removed to
ws that attach
Fig
es: The side p
e jig is desig
fore tightenin
a vice to secu
ep, the side p
the rear take
Figur
uide: The tem
he template
first three o
then remov
o attach or re
the front/rea
gure 10: Templa
plates attach
ned to accom
ng the screws
ure the jig, so
plates serve
e down screw
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re 9: Install buf
mplate attac
is used alone
of four steps
ing the drill g
emove the dri
ar support ar
ate only (left) o
to the jig thro
mmodate diff
s. For the first
o the screw t
as the templ
w/nut can be i
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ffer support an
hes to the fr
e (figure 10,
involves inst
guide to mill
ill guide. Wh
e flush with t
or Template &
ough the tem
ferent lower
t three steps,
through the r
late for the f
nstalled thro
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nd rear support
ront and rea
left). For ro
talling the te
the pocket.
en properly i
the top surfac
Drill Guide (rig
mplate with fo
widths and
, the main pu
rear take dow
fire control g
ough the rear‐
August 17,
AR‐15 Jig Instr
t
r support us
oughing, the
emplate with
Only the fro
nstalled (not
ce of the tem
ght) installed
our small cap
should be pr
urpose of the
wn hole is no
group pins ho
‐take down h
2014
ructions 7
ing four sma
drill guide is
the drill gui
ont support s
upside down
mplate.
p screws (figu
ressed agains
e two side pla
ot needed. Fo
oles. For incr
ole.
all cap
used
ide to
crews
n), the
re 11,
st the
ates is
or the
eased
6061 vs 7
offered in
shallower
press can
and go slo
Step 1:
Configure
shown in
Trigger Sl
way throu
results, st
accidenta
7075 Lower:
n either 606
r depth of cut
significantly
ow.
Fully Supp
e jig for drillin
figure 1.1 wit
ot Drilling: W
ugh the lowe
tart the drill
l damage to t
Commonly,
1‐T6 or 7075
ts when using
reduce the o
ported Trig
ng: The temp
th the drill gu
Figure 1.1: Ji
With the two
er (figure 1.2
after the dr
the template
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Figure 11: S
most forged
5‐T6. In gen
g the router.
overall effort
gger Slot
late is installe
uide installed.
ig configured to
exposed hole
, left). Figure
rill bit is part
.
w.ModulusA
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Side Plate Insta
lowers are m
neral, 7075‐T
Although a
. If a hand‐d
ed with the r
.
o drill he rear p
es in the trigg
e 1.2, right s
tially or com
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allation
made with 70
T6 is more d
hand drill ca
drill is used w
ear pocket te
pocket and trig
ger slot, use
hows the low
mpletely throu
August 17,
AR‐15 Jig Instr
075‐T6 lowers
ifficult to wo
an be used w
with 7075‐T6,
emplate close
gger slot
a 19/64” dril
wer after com
ugh the drill
2014
ructions 8
s and billet c
ork with req
ith 7075‐T6,
please be pa
est to the buf
ll bit to drill a
mpletion. For
guide to pr
an be
uiring
a drill
atient
ffer as
all the
r best
revent
Configure
Trigger S
complete
1. A
us
2. Im
ve
A
co
3. In
o
4. W
p
of
jig
5. In
b
sh
n
Fig
e jig for millin
lot Milling: A
d lower with
djust the end
se the depth
mportant: Set
erify that the
rms suggests
omfortable d
nsert the end
n the router a
With firm dow
ressure. The
f the templat
g. Figure 1.5,
ncrease the c
reaks out of t
hown in figur
ot to exceed
gure 1.2: Drillin
ng: The config
Figure 1.3: Jig
A router wit
the trigger sl
d‐mill to touc
gauge to set
t the first cut
e cutting surf
s that the us
epth not to e
d‐mill into a d
allow the rou
wnward press
goal is to first
te. Turn off th
left shows th
utting depth
the bottom o
re 1.4, right. M
¼” depth of c
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ng the trigger s
gured jig is sh
g configured to
h an end‐mi
ot is shown in
ch the top of
the depth an
t depth to be
faces of the
er first start
exceed ¼”.
drill hole and
ter to come u
ure applied to
t adjoin the t
he router, wa
he lower after
¼” using the
f the lower. T
Modulus Arm
cut based on
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slot holes (left),
own in figure
o mill the rear p
ll is used to
n figure 1.5, r
f the lower (u
nd verify.
e ¼” (maximu
end‐mill are
with 1/16”‐1
without the
up to full spee
o the base, m
two holes, the
it until the en
r the first pass
depth gauge
The “A” depth
ms suggests th
adjustment o
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, lower after d
e 1.3 after the
pocket and trig
form the ca
right).
using the rib
um) below th
below the e
1/8” cutting
end‐mill tou
ed.
mill using shal
en widen unt
nd‐mill stops
s.
e and repeat s
h gauge can b
hat the user w
of router spee
August 17,
AR‐15 Jig Instr
drilling (right)
e drill guide is
gger slot
avity (figure
between the
he surface usi
edge of the te
depth before
uching the low
llow clockwis
til the end mi
spinning, and
steps 3 and 4
be used to set
work up to a c
ed and user e
2014
ructions 9
s removed.
1.4, left) an
e two drill ho
ing the drill g
emplate. Mo
e working up
wer, carefully
e passes with
ill touches the
d remove fro
4 until the en
t the final dep
comfortable d
experience.
d the
oles) –
guide,
odulus
p to a
y turn
h light
e side
m the
d‐mill
pth as
depth
Figur
Step 2:
Configure
shown in
step. Ma
template
re 1.4: Router t
Figure 1.5:
Rear Shelf
e jig for drillin
figure 2.1 w
ake sure all t
is upside dow
F
to mill out trig
: Example of pa
f
ng: The temp
ith the drill g
three holes a
wn.
Figure 2.1: Jig c
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ger‐slot ¼” at a
artially milled t
late is installe
guide installe
are fully visib
configured to d
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a time (left) an
trigger slot (lef
ed with the r
d. DO NOT in
ble. If the rig
drill out the rea
Arms.com
Arms.com | A
nd final cut dep
ft) and comple
ear pocket te
nstall the rea
ght most hol
ar pocket and t
August 17,
AR‐15 Jig Instr
pth set with “A
ete trigger slot
emplate close
ar takedown
e is partially
trigger slot
2014
ructions 10
A” depth gauge
(right)
est to the buf
screw/nut fo
covered, the
0
e
ffer as
or this
e drill
Rear‐Shel
with a 3/8
lower is s
prevent te
Figure 2.3:
Configure
lf Pocket Dri
8” drill bit (fig
hown in figur
emplate dam
: Drilled lower
e jig for millin
F
lling: The thr
gure 2.2, righ
re 2.3. Make
age.
F
–most 80% low
slot, wh
ng: The config
Figure 2.4: Jig c
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ree holes exp
t) to a depth
sure to start
Figure 2.2: Drill
wers will have
hich does not re
gured jig is sh
configured to m
w.ModulusA
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posed throug
set with the
the drill with
ling the trigger
three holes. Th
equire the two
own in figure
mill out the rea
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Arms.com | A
gh the rear‐p
“B” depth ga
h the bit surro
r slot holes
he lower in this
o right most ho
e 2.4 after the
ar pocket and t
August 17,
AR‐15 Jig Instr
pocket templa
auge (figure 2
ounded by th
s example has
les.
e drill guide is
trigger slot
2014
ructions 11
ate are drille
2.2, right). Fin
he drill templa
additional refe
s removed.
ed out
nished
ate to
erence
Rear‐shel
complete
1. A
ga
2. Se
h
to
d
3. W
p
th
sp
4. C
2
of
u
an
Figure 2
f Pocket Mill
d lower with
djust the end
auge to set th
et the first cu
ole, and with
o come up to
epth before w
With firm dow
ressure. First
he end mill to
pinning, and r
heck the dep
.5, right. Adju
f 0.630” is rea
p to a comfo
nd user exper
2.5: Milling the
ling: A router
the trigger sl
d‐mill to touc
he depth and
t depth to be
hout the end‐
full speed. M
working up to
wnward press
t adjoin the t
ouches the si
remove from
pth using the
ust the cuttin
ached as indi
rtable depth
rience.
e rear‐shelf poc
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r with an end
ot is shown in
h the top of t
verify.
e ¼” below th
‐mill touching
Modulus Arms
o a comfortab
ure applied to
hree holes by
de of the tem
the jig.
“B” depth ga
g depth by ¼
cated by the
not to excee
cket (left) “B” d
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d‐mill is used
n figure 2.6.
the lower (us
he surface usi
g the lower, c
s suggests tha
ble depth not
o the base, m
y removing t
mplate. Turn
auge after ea
” at a time an
depth gauge
ed ¼” depth o
depth gauge at
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Arms.com | A
to form the
sing the rib b
ng the depth
carefully turn
at the user fir
to exceed ¼”
mill using shal
the rib betwe
off the route
ach pass. The
nd repeat ste
. Modulus Ar
of cut based
t the maximum
August 17,
AR‐15 Jig Instr
cavity (figure
etween drill
gauge, inser
on the route
rst start with
”.
llow clockwis
een the holes
er, wait until
e final depth
eps 2 and 3 u
rms suggests
on adjustme
m depth for a 0
2014
ructions 12
e 2.5, left) an
holes) – use d
t router into
er allow the r
1/16”‐1/8” c
e passes with
s, then widen
the end‐mill
is shown in f
ntil the final d
that the user
nt of router s
0.630” rear poc
nd the
depth
a drill
router
utting
h light
n until
stops
figure
depth
r work
speed
cket
Step 3:
Configure
buffer as
partially c
Fire‐Contr
e jig for drilli
shown in fig
covered. If th
rol Pocket
ng: The temp
gure 3.1 with
he 7th hole is p
Figure 3.
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Figure 2.6: Fin
plate is instal
h the drill gu
partially cove
.1: Jig configur
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nished rear‐she
lled with the
uide installed
red, the drill
red to drill the f
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Arms.com | A
elf pocket
fire‐control
d. The 8th ho
template is u
fire‐control po
August 17,
AR‐15 Jig Instr
pocket temp
ole (left mos
upside down.
ocket
2014
ructions 13
plate closest t
st) hole shou
to the
uld be
Fire‐Cont
with a 3/8
lower is s
Configure
rol Pocket D
8” drill bit (fig
hown in figur
e jig for millin
Drilling: The f
gure 3.2, righ
re 3.3.
Figur
Figure 3.
ng: The config
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ive holes exp
t) to a depth
re 3.2: Drilling
.3: Lower with
gured jig is sh
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posed throug
set with the
the Fire‐Contro
Fire‐Control p
own in figure
Arms.com
Arms.com | A
gh the rear‐p
“C” depth ga
ol Pocket Holes
ocket holes dri
e 3.4 after the
August 17,
AR‐15 Jig Instr
pocket templa
auge (figure 2
s
illed
e drill guide is
2014
ructions 14
ate are drille
2.2, right). Fin
s removed.
4
ed out
nished
Fire‐Cont
complete
1. A
ga
2. Se
e
sp
w
3. W
p
th
e
4. C
3
of
u
an
rol Pocket M
d lower with
djust the end
auge to set th
et the first cu
nd‐mill touch
peed. Modul
working up to
With firm dow
ressure. First
hen widen un
nd‐mill stops
heck the dep
.5, right. Adju
f 1.249” is rea
p to a comfo
nd user exper
Figure 3.
Milling: A route
the fire‐cont
d‐mill to touc
he depth and
ut depth to b
hing the lowe
us Arms sugg
a comfortabl
wnward press
t adjoin the a
ntil the end m
spinning, and
pth using the
ust the cuttin
ached as indi
rtable depth
rience.
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.4: Jig configur
er with an en
rol pocket is s
h the top of t
verify.
be ¼” below t
r, carefully tu
gests that th
le depth not t
ure applied to
all holes to t
ill touches th
d remove fro
“C” depth ga
g depth by ¼
cated by the
not to excee
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red to mill the f
nd‐mill is used
shown in figu
the lower (us
the surface, i
urn on the rou
he user first s
to exceed ¼”.
o the base, m
he trigger slo
he side of the
m the jig. Fig
auge after ea
” at a time an
depth gauge
ed ¼” depth o
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fire‐control po
d to form the
ure 3.7.
sing the rib b
insert router
uter, and allo
start with 1/
.
mill using shal
ot by removi
template. Tu
ure 3.6 show
ach pass. The
nd repeat ste
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of cut based
August 17,
AR‐15 Jig Instr
cket
e cavity (figur
etween drill
into a trigge
ow the router
/16”‐1/8” cut
llow clockwis
ing the rib b
urn off the ro
ws the lower a
e final depth
eps 2 and 3 u
rms suggests
on adjustme
2014
ructions 15
e 3.5, left) an
holes) – use d
er slot and wi
r to come up t
tting depth b
e passes with
etween the h
uter, wait unt
fter the first p
is shown in f
ntil the final d
that the user
nt of router s
nd the
depth
ithout
to full
before
h light
holes,
til the
pass.
figure
depth
r work
speed
Figure 3.
.5: Milling the f
fire‐control po
Figure
Fi
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ocket (left) “C”
e 3.6: Fire‐cont
igure 3.7: Com
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depth gauge a
trol Pocket afte
pleted fire‐con
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Arms.com | A
at the maximum
er the first pas
ntrol pocket
August 17,
AR‐15 Jig Instr
m depth for a 1
ss
2014
ructions 16
1.249” rear po
6
cket
Step 4:
The last s
the safety
1. In
p
2. U
su
3. O
b
4. U
se
5. U
ri
jig
6. Tu
F
Fire‐Contr
tep is to drill
y selector as s
nsert the rear
in hole), and
sing a woode
urface.
Optional: Clam
locks or meta
sing a 3/8” d
elector. (Try
sing a 5/32 d
ght) and trigg
g before drilli
urn over the
Figure 4.1: Dril
rol Pin Hole
the holes wh
shown in figu
r take down s
hand tighten
en block or m
mp the botto
al parallel for
drill bit, drill
to make sure
drill bit, drill
ger pin holes
ing)
lower and rep
lling the fire‐co
Figure 4.2: T
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es
hich accomm
re 4.1. A finis
screw throug
the nut.
etal parallels
om side piece
spacing.
through only
e the drill is pe
through only
(figure 4.1, ce
peat the proc
ontrol pin holes
Trigger/hamme
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odate the fire
shed lower is
h the side pla
, support the
e in a vice, p
y one side o
erpendicular
y one side of
enter). (Try t
cess.
s using the side
er pin holes and
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e‐control trig
shown in figu
ates (and thro
e side so the s
parallel to th
of the lower
to the jig bef
the lower to
to make sure
e plate as temp
d safety select
August 17,
AR‐15 Jig Instr
gger and ham
ure 4.2.
ough the low
side plate is p
he work surfa
(figure 4.1, l
fore drilling)
o form the ha
the drill is pe
plates to locate
tor holes
2014
ructions 17
mmer pin as w
wer rear take
parallel to the
ace using wo
eft) for the s
ammer (figur
erpendicular t
e the holes
7
well as
down
e work
ooden
safety
re 4.1,
to the
Helpful
The comp
suggestio
first time
Hints
pleted lower
ns to improv
novice as we
is shown in
ve the quality
ll as experien
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the figures
y of the lowe
nced 80% low
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below. This
er. The hints
wer fabricators
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section will
and suggesti
s.
August 17,
AR‐15 Jig Instr
focus on ad
ons may be
2014
ructions 18
dditional hint
useful to bot
8
s and
th the
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August 17,
AR‐15 Jig Instr
2014
ructions 19
9
Finishing
used to c
power too
A hand‐d
hand‐drill
rented. A
increased
Drill P
oo
Hand‐
ooo
o
Gene
o
o
o
o
oo
For the m
drill press
dangerou
or rent. A
time, and
Drill‐P
Route
o
Power Tools
complete the
ols, and unde
rill or a drill
is the lowes
A drill press
precision.
Press
Set the dri
Make sure
‐Drill
Using the l
Best result
Cordless d
may be req
For 7075 a
recommen
ral Guidelines
Make sure
considerab
To prevent
drill guide.
Frequently
between t
Clear the
accumulat
Cutting oil
After each
slip.
milling proces
s, router, or
s. A router is
A mini‐mill is
an increase i
Press as a mil
er
A router co
: The Modulu
e drilling and
erstand the m
press can be
st cost option
is a rarer an
ll‐press speed
e the drill bit i
low (2‐speed
ts are obtaine
drills will wor
quired.
alloy lowers,
nded.
s and Recomm
e the drill b
bly higher eff
t damage to
. After drilling
y clear the ch
he drill guide
chips betwee
ting and comp
or WD‐40 ap
h hole, use th
s, the Modul
mini‐mill. Us
common too
a significant
in quality for
l (NOT RECOM
ommonly use
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us Arms jig is
milling proc
manufacturer’s
e used to com
n, and its por
nd more exp
d to approxim
s square to th
) or medium
ed with a mor
rk; however,
the alloy is s
mendations
bits are sharp
ort and exces
the template
g, stop the dr
hips by pulling
e and lower is
en the drill g
pacting.
pplied with a t
he drill guide
us Arms jig i
sing a drill pr
ol that is affor
ly more expe
the experien
MMENDED)
ed for woodw
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compatible w
ess. Please m
s product ma
mplete the 8
rtability allow
pensive optio
mately 2500 r
he table in bo
(3‐speed) gea
re powerful c
more than o
significantly m
p – sharpen
ssive tempera
e edges, start
ill bit before
g the drill bit
designed to
guide and low
toothbrush c
to check the
s compatible
ress as a mill
rdable and co
ensive option
ced user.
working with a
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with a numbe
make sure th
anual.
80% lower us
ws it to be ea
on, but resul
rpm.
oth the x and
ar option if av
corded drill.
one battery a
more difficult
if necessary
atures.
the drill whe
moving to the
up but not o
accommodat
wer after ea
an reduce the
e depth to m
e with all com
ling tool is N
ommonly use
n but results
a standard ¼”
August 17,
AR‐15 Jig Instr
er of differen
hat you can s
ing the Mod
asily borrowe
lts in reduce
y directions
vailable.
nd additiona
t to drill – a d
y. Dull drill
en the drill tip
e next hole.
out of the dri
te the chips.
ch hole to p
e drilling effo
make sure the
mmon metho
NOT recomme
d, making the
a significant
” collet.
2014
ructions 20
t tools that c
safely operat
ulus Arms jig
d from a frie
ed build time
before using.
l cool down
drill press is h
bits will res
p is partially
ll guide. The
prevent chips
ort.
e drill stop di
ds such as us
ended and ca
em easy to bo
reduction in
0
can be
te the
g. The
end or
e and
.
times
highly
ult in
in the
space
from
id not
sing a
an be
orrow
build
o
oo
o
o
o
Mini‐
o
o
o
o
Gene
o
The end‐m
recommen
with the f
surface.
Routers w
Beware of
and damag
The result
Router wit
End‐mill c
circles, try
This jig has
Mill
A mini‐mi
additional
Start with
without to
end mill is
Cut either
removing
channel).
Carefully c
final pass.
ral Guidelines
The user s
increasing
mill must be a
nded for best
first cutting p
ith variable s
f inexpensive
ged lowers.
ts in these in
th the speed s
ut in a clock
ing to keep o
s been tested
ll with a Mo
control, impr
the end‐mill
ouching the ji
cutting on bo
toward the f
more materi
control both t
s and Recomm
should start w
the depth of
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a 4” long, ¼”
t results. Lon
pass that the
peed give the
routers with
nstructions w
set at 4.75.
kwise fashion
only ¼ of the c
d with a numb
dulus Arms j
roved surface
l in a drill ho
g wall to cut
oth sides.
front or back
al (should be
the x and y t
mendations
with a shallow
f cut to a com
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diameter en
nger cutting s
cutting flute
e bests results
quite a bit o
were achieve
n. Best result
cutting surfac
ber of differen
jig in a mach
e finish, incre
ole and start
a slot. This m
k without tou
e done in abo
o generate a
w 1/16” to 1
mfortable leve
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d mill. Three
surfaces can
es are at leas
s, although fi
of flex – they
ed with a Bo
ts are achiev
ce on the met
nt routers.
hine vice can
ased speed, a
the mill. Slow
must be done
uching the jig
out two pass
light pressur
1/8” depth of
el that should
August 17,
AR‐15 Jig Instr
e flutes with 1
damage the
st 50% below
xed speed ro
can result in
osch PR20EVS
ved with ligh
tal to be remo
n be used. Th
and reduce fa
wly move tab
e at a slow fee
g wall, then m
es on each s
re against the
f cut to gain
never exceed
2014
ructions 21
1” cutting de
e jig. Always
w the jig tem
outers can be
non‐parallel
SK Colt Palm
ht clockwise
oved.
he x‐y table
atigue.
ble front and
ed speed sinc
move front to
ide of the sta
e template fo
experience b
d ¼”.
pth is
check
mplate
used.
walls
m Grip
semi‐
offers
d back
ce the
o back
arting
or the
before
o
o
o
Misc. Too
Vice:
clamp
cost, c
Shop‐
chips
Tooth
Va
Th
If the end
without th
the jig, sh
dimension
The end‐m
increases,
pair of nee
The cloggi
Fre
If p
ols: The follow
The vice and
ped or bolted
common ava
‐Vac: Great a
hbrush: Can b
ariable speed
he lower end
‐mill has larg
he end‐mill to
hould the e
ns.
mill when wor
it is possible
edle nose plie
ng effect can
equently coat
possible, redu
wing are sugg
d work surfac
d to the work
ilability, and
at removing c
be used to app
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router is hig
mill speed all
ger than a 1”
ouching the e
nd‐mill touc
rking properly
the flutes ar
ers.
be reduced b
ting the end‐
uce the speed
estions based
ce must not m
k surface. A d
low profile th
chips and cle
ply a small am
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gh recommen
lows for great
” cutting surf
nd of the jig.
h the templ
y will feel like
re clogged wi
by
mill with cutt
d of the end‐m
d on our expe
move or flex
rill vice show
hat reduces fl
eaning up the
mount of oil o
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nded when a
ter control
face, the first
Only once th
late edges t
e its cutting th
ith metal. Thi
ting oil or WD
mill.
erience.
when routin
wn in the figu
exing.
e work area
on the end‐m
August 17,
AR‐15 Jig Instr
approach the
t few passes
he cutting sur
to obtain the
hrough butte
is can be rem
D‐40 applied w
ng. The vice n
re was select
to prevent s
ill.
2014
ructions 22
e maximum d
need to be
rfaces have cl
e proper fin
er. When the
moved with a
with a toothb
needs to be e
ted due to its
spreading of
depth.
made
eared
nished
effort
small
brush.
either
s low‐
metal
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