<church__>
may i ask here a bit 3d printing related modeling advise here or it would be offtopic? (wondering how to better get by without supports in embedded horizontally aligned hexnut with inertion slot from side. aligning part differently will compromise other issues elsewhere)
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<J25k8>
church__ what is the issue?
<J25k8>
bridging should work fine
<church__>
J25k8: "issue" was that from that particular place autogenerated supports were most PITA to remove :). So wondering how to better deal with that specific bit of model. Turning 45deg will add need to design supports that will look ugly on external details, pausing midprint for nut insertion seems something users might not want to deal with, not all have threaded inserts unlike basic hexnuts, and so on
<church__>
oh, and another option to turn part vertically due it being long, will make it unstable on plate & compromise strength in specific directions
<church__>
hence thinking if maybe to design in some manual support detail that would be easier to remove but would reduce bridging distance. or separate printable insertable part so that it's not bridge but overhang. or .. don't know. disabling supports in just that place and rely on bridging? :/
<J25k8>
church__ just block supports at that location (or disable)
<J25k8>
make the slot .5 higher so bridging will leave enough for the nut to put in later
<J25k8>
another option is to use a shallow slope and print with low layer height at that location.
<church__>
oh, layer height will be very low, 0.08, due small radius rounded filleting in many cases. it helps with overhangs, should it help with bridging too?
<church__>
shallow slope .. i distantly remember watching something along the lines .. like few "cross layers" in different directions, forming only slight slope, but improving a lot vertical bridging above round hole
<church__>
IIRC it was something like sequential bridging or sacrificial bridges. gonna dig around bookmarks / watched videos history
<J25k8>
you generally leave a 1 layer slot with hole width, perpendicular to the inserting direction. So you don't get "half bridges" at the hole
<othx>
church__ linked to YouTube video "How to 3D Print bores without supports (Fusion 360 Masterclass)" => 1 IRC mentions
<J25k8>
you can also print with soluble support (PVA) or interfaces with a different material.
<church__>
PVA probably will limit to PLA for part, temps too differ from eg. ABS
<J25k8>
or just use a heated nut (120°C) and press in.
<church__>
also not an option :) (external surface above that i don't want to change looks of, hence the side insert slot). probably very best would be pausing mid-print for nut insertion, then just printing over, bet probably will go with your suggested 1 layer or if i find how to get it right in openscad, those multi-sequential bridges
<J25k8>
You can print with different temperatures
<church__>
possibly PITA to do, but i'll probably be able to reuse once written module for that type of bridging in future models
<J25k8>
and you can press a heated not from the side in
<church__>
.. if that won't move plate out of place or if won't knock off part :). everything seems to have some compromises :)
<J25k8>
it will just melt away the low density support or any strings
<J25k8>
using square nuts will improve the results too
<church__>
yeah, i know that bit. and that threaded meltable inserts are stronger then square. and even recently found out about interesting ones with four big vertical teeths to side, which are much stronger then even that
<church__>
but lot of holding torque in this particular application is not required, hence wanted to design in something that everybody has at hand, i.e. basic hexnut