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Do you know this part?
Posted: Sun Sep 14, 2014 12:51 am
by jeffhuber
Does anyone know what this kind of part is called? Just threw this together in CAD.
My goal is to connect 2 dowels at a 90 degree angle where I will fix one (with glue or screw) and allow the other one to rotate in 1 direction.
[img]
http://i.imgur.com/5oed3jLl.png[/img]
Thanks!
Re: Do you know this part?
Posted: Sun Sep 14, 2014 4:44 pm
by Generic Default
It's called a 90 degree crossover. I'm always wondering what the names of part geometries are when I make stuff too!
You may want to increase the wall thickness a little and put a set screw hole in the stationary tube. That part will need support material.
Re: Do you know this part?
Posted: Sun Sep 14, 2014 11:15 pm
by BrianC
Unless you need the ends rounded I would make the ends square and print it standing up. That would probably give you the best print without supports.
Re: Do you know this part?
Posted: Sun Sep 14, 2014 11:41 pm
by jeffhuber
That's a great recommendation!
also - i looked into buying the part now that I know what it's called... but it's like $30! So i decided to print it =)
Re: Do you know this part?
Posted: Mon Sep 15, 2014 10:25 pm
by Generic Default
That's what 3d printers are for! I do my strong mechanical parts in nylon most of the time, unless it needs rigidity rather than strength in which case I use ABS. If you print a lot of cylindrical mating parts with holes, I recommend you get a cheap set of drill bits. You can get a set for like 30 dollars, and they are useful when you need precise hole sizes.
Print the holes exact or slightly oversize, then ream them will twist drills. You can get some very tight sliding fits that way, on par with precision reaming metal.