10/11/13 RepRapPro Tri col our frame assembl y - RepRapPro Wi k i www.reprappro.com/documentation/RepRapPr o Tr i col our_frame assembl y 1/14 RepRapPro Tricolour frame ass embly From RepRapPro Wiki Introduction | Fr ame as s e m bl y| Y axis assembly | X axis assembly | Z axis assembly | Heated bed assembly | Extruder drive assembly | Hot end assembly | Wiring | Power supply | Commissioning | Printing | Multi ‑colour/multi ‑materials | Colour Printing - Slic3r | Colour Printing - RepRapPro Slicer | Maintenance | Troubleshooting | Improvements Contents 1 Goal 2 Tools 3 Frame triangles 4 Cross bars 5 Put them all together 6 Z-motor mounts, diagonal, and power connector 7 Smooth rods 8 Aligning the frame 9 Frame finished 10Next stag e Goal By the end of this stage, your machine should look like this:
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Step 1 RepRapPro Tricolour Frame Assembly - RepRapPro Wiki
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7/17/2019 Step 1 RepRapPro Tricolour Frame Assembly - RepRapPro Wiki
Put the two U clips on the bottom rods of the frame triangles roughly in the middle of their bars. Using a 470mm
rod, thread it through the two U clips, with a nut and lock washer each side. You may have to twist the rod to
get it through the U clips, using its thread to move it - it can be quite a snug fit. Secure the rod to the frame withanother lock washer and nut on the outside of each U clip.
Use nuts and lock washers to put two more U clips on its ends for the Z smooth rods, as shown below. Leave
all these loose.
The order of parts on the lower rod should be:
nut, lock washer, U clip (for z smooth rod), lock washer, nut, nut, lock washer, U clip (frame), lock washer, nut
- (gap between frame triangles) - nut, lock washer, U clip (frame), lock washer, nut, nut, lock washer, U clip
(for z smooth rod), lock washer, nut
Next thread the base diagonal rod through two of the four feet. Put nuts and lock washers on it both inside and
Place the frame on a flat surface. Wooden furniture, by and large, is not flat. But thick kitchen worktops are
very flat.
Frame alignment order:
1. Check all triangle sides are equal
2. Check cross bars (between vertices of triangles) are all equal
3. Adjust base diagonal to square the base; you should be able to measure across the corners of the base
(upside down is easiest) - the red lines shown in the image here:
4. If the frame doesn't sit flat on the table (assuming a flat table) once you've done this, press the frame on the
corners that are high, so the base square does sit flat.
5. Use the supplied glass to check that the Y axis smooth rods are level with each other. The rods need to be
level, or the heated bed will not move in one plane only; one side will rise and fall as it move back and forth on
the Y axis. Place the glass on the rods, and see if the glass rocks. Use a piece of paper on each side, and at
each end, to check there is no gap between rod and glass. If the rods are not level, check your table is flat, that
nothing is caught under the footed vertices, and that the smooth rod bar clamps are evenly clamped. You will
have to remove the rods to fit the Y axis and bed, but this test will check that your construction is correct and
the frame is square. If you can't get the rods quite level, you may need to place a shim under one foot, like afolded piece of paper, to get the bed perfectly level. Leave doing this until later.
6. Square the Z rods front/back. Tie a piece of string quite tightly around the base of both Z rods, and measure
along the triangle bottom rod on each side to get the rods central. Equalise the length by moving the frame clip