Source link : https://www.thingiverse.com/thing:1803253
Maker Select i3
added tongue and groove design
added U-snaps and holes to create an optional "Glueless" fit
added optional separate files for dual printers and customizations:
a. "DNA_Helix_Pencil_Holder_06PartA.stl" - this is the bottom part
b. "DNA_Helix_Pencil_Holder_06PartB.stl" - this is the top part
c. "DNA_Helix_Pencil_Holder_Extension_01.stl" - this is an optional extension (so far untested). Put this part in the middle and add 8 pencils (or 8 DNA letter pairs).
d. "DNA_Helix_Pencil_Holder_Optional_U_Snaps01" - this is a u shaped pressure fit snap that fits on the outside of the Helix into the two 4mm holes at the middle. (I'll add a picture to clear up any confusion). It should also be able to bond the optional extension.
Added a Smoother version
fixed slic3r issue
Added a tall version (215mm tall) for those with printers that can print that high. You probably need supports for the top of the design. If you get a successful print with the tall STL file, let us know the settings you used so I can post it here.
For those like me with normal sized printers - use the "DNA_Helix_Pencil_Holder_Full_06.stl" file and follow instructions above.
Use Snaps or Super glue bottom of helix to top of helix. (or use alternative bonding method).
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