20-02-2014 15:24

Peter Matteson

Re: pic: 3d printed 1/2 inch hex shaft to arm part

Be careful when you put torque on it.

Depending on the type of printer you have the plastic may split around the hex.

Do you have sharp corners around the points of the hex?

20-02-2014 15:25

nxtmonkeys

Re: pic: 3d printed 1/2 inch hex shaft to arm part

What do you mean by sharp corners?

20-02-2014 16:07

Botwoon

Re: pic: 3d printed 1/2 inch hex shaft to arm part

Any corner that isn't radiused.

20-02-2014 16:18

nxtmonkeys

Re: pic: 3d printed 1/2 inch hex shaft to arm part

On the part, I'm not sure. I will soon post an image from INVENTOR PRO.

20-02-2014 18:46

Joe195

Re: pic: 3d printed 1/2 inch hex shaft to arm part

I would definitely round the base of the hex extrusion to add some strength. Besides that, looks great!

20-02-2014 19:34

Chris is me

Re: pic: 3d printed 1/2 inch hex shaft to arm part

This is a great example of a part that didn't need to be 3D printed. A wide variety of off the shelf hubs combined with a simple plate gusset would do the job much better, with far less risk of failure. Optionally you could broach your own part from solid, but most teams don't have a hex broach.

The hub around the hex should probably be thicker if you keep this plastic.

20-02-2014 19:53

nxtmonkeys

Re: pic: 3d printed 1/2 inch hex shaft to arm part

Quote:

Originally Posted by Joe195 I would definitely round the base of the hex extrusion to add some strength. Besides that, looks great!

Quote:

Originally Posted by Chris is me This is a great example of a part that didn't need to be 3D printed. A wide variety of off the shelf hubs combined with a simple plate gusset would do the job much better, with far less risk of failure. Optionally you could broach your own part from solid, but most teams don't have a hex broach. The hub around the hex should probably be thicker if you keep this plastic.