jit-s-build [Bukobot 3D Printer Instructions & Docs]

**jit's build**

This is documentation of the building of a Bukobot 8 Duo kit.  This model has two extruders and a heated bed.  The single-extruder version of the x carriage is also shown.

Some photos show printed parts lists.  These are based on an early version of the Bill of Materials (BOM), and may not exactly match your kit.

The background grid in some photos is a 1 cm grid.
  
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The printed plastic part shown in this image has a significant overhang in the large circular opening.  This printing technology cannot produce a sharp clean profile with this kind of overhang, so the part must be trimmed before you attach parts to it.  See [[Cleaning up printed parts]].

Sometimes you will find that a screw will not easily fit into a hole in the printed part.  This printing technology cannot produce holes of a precise size, so parts designers adjust the size of holes to minimize problems for builders.  If a screw is intended to be self-tapped into a hole (with no nut on the other side) it is important that the hole not be too wide, so the designer will specify a smaller hole than really needed for that screw.  If you have a lot of trouble turning a screw into a hole, widen the hole, but not too much.

On the other hand, if a nut is to be used on the screw, the hole can be widened until the screw easily passes through.  Be very careful to determine which holes use nuts and which don't, as it's a big hassle if you remove too much plastic from a hole that needs it to hold threads.
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