fischertechnik compatible parametric print in place gear chain
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I was curious if I could print a fischertechnik compatible chain (module m1.5) using the print-in-place technique. I…
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I was curious if I could print a fischertechnik compatible chain (module m1.5) using the print-in-place technique. I succeeded mostly, but not completely.
Two versions are included:
- The "slim" chain is more similar to the original chains and only slightly wider (9.5mm vs. 9.3mm). It can be connected to basic fischertechnik building blocks. However, it is harder to print, needs supports, and is more flimsy.
The "flat" chain is more sturdy, easier to print, and needs no supports. It is a bit wider (9.8mm vs. 9.3mm), though. Both versions are functional. You can separate, connect, and reassemble the links after printing. As with other print-in-place models of this scale, you'll have to loosen them up manually quite a bit after printing. Even so, I did not succeed yet in getting the same level of suppleness as the original.
I provide .stl files for both versions with a single link, 10 links, and 30 links. Additionally, I included the FreeCAD source file, where you can change most parameters, including the length of the chain, in the spreadsheet titled "v". Be aware that FreeCAD may take some time to recompute the model, depending on the number of links. Edit 12/02/2019: I designed this before discovering the Array-Tool in FreeCAD's Draft-Workbench, which would have been amuch easier and elegant way to do this.
Please respect my licensing conditions when using the FreeCAD model.
If you encounter problems with printing this, please see my more detailed post in the comments section.
Please consider leaving a "like" or posting your make as a token of appreciation for my work.
Find my other fischertechnik designs here.
Print Settings
Printer Brand:
Anet
Printer:
A8
No
Resolution:
.1 mm
Filament:
any PLA
Notes:
The flat version doesn't need supports if your printer can bridge properly (check you fan settings).
The slim version needs supports for the outside parts. I got better results by blocking supports under the axles, they print better with bridging (see above).If you encounter problems with printing this, please see my more detailed post in the comments section.
Post-Printing
Take care when separating the print in place parts for the first time. Wiggle them only a little at first, increasing the angle as you go. Usage will increase suppleness over time, however with my prints a certain degree of stiffness never went away.
Category: Construction Toys