ReChain Self centering
From apm
| 50px | This page is part of the ReChain project. Short for Rebar CoreChain Systems. For an index of all pages of this project, see the category page ReChain. |
(wiki-TODO: Add the already made illustrative image. This shows details on do's and don'ts.)
One good design scheme:
- Trapezoids ridges going into V-shaped grooves.
- Only the flanks touch the flanks. The main coplanar surfaces do not touch.
- To avoid some slide-rotations always use at last two mating structures. (These may be parallel or normal to each other.)
- Eventually constrain all degrees of freedom of the pressed together surface contact. (This can involve more than two parts.)
(FDM/FFF) 3D printing context
Not all flanks properly contacting due to printing inaccuracies
may perhaps be compensatable by some material flex when using polyamide (PA/nylon).
polyamide (PA/nylon) is challenging to print though (shrinkage, bed ashesion, heated chamber)
Fiber fill makes it better printable but removes the flex, so that defeats the purpose.
Fibers may help reducing creep issues tough.
SLA printing may be better as it's higher resolution and more accurate across the layers,
though one might want to go for smaller parts then and
choices for permanent high compression force tolerant material are likely more limited (2025).
