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I finished my 3D Printable screw design! Excellent print ability, reliable for simple use, though the head is prone to strip... can't win them all.
(programming.dev)
If you wanna print it yourself, the model is here: https://www.printables.com/model/1348194-4n-threaded-flat-head-screws-and-nuts-10-32-equiva
Design to be a drop in replacement for 10-32 screws with a much, much higher pitch. These screws are extremely easy to print, is reliable enough that it can hold some weight.
If you wanna print this yourself, you need to make sure that the screw is sideways, so if it breaks it's no on the layer lines.
Using them in my own prints which had metal screws and they are holding quiet well.
I'm not sure if the wire gauge thing is right, unless you're talking about a different system than I'm familiar with, because with wire gauge smaller number=bigger wire, and with screw sizes smaller number=smaller screw
Also just my 2¢ on "machine screw" vs "bolt" as a casual tinkerer with various things held together by different types of threaded fasteners.
Generally speaking if it's got a hex head or nut that I'm using a wrench to tighten, it's a bolt
If it's got some sort of hole (or God forbid a slot) that I'm going to use some sort of a driver (for the purposes of this, an Allen "wrench" is a driver) to tighten, it's a screw.
And of course everything gets really murky when we start talking about things like sheet metal screws, lag bolts/screws, masonry screws, etc.
@Fondots @Bluewing especially since the terminology is different in different dialects of English. I think what you call lag bolts might be coach bolts over here.
Lag bolts are more like a big wood screw, what you call coach bolts seem to be what we call carriage bolts