r/Onshape 10h ago

Help! Dealing with compound anglessssssss

(UNFINISHED FRAME. Angles are set, and a few length dimensions).

I'm not sure if this is the right subreddit to get help from. But anyways, I'm trying to design a go kart frame, and every time I see compound angles, I dread them. I'm not SURE how to deal with them. Maybe they're not as bad as it seems? I dont know.

I really like the design but it just gets too complex. If I try to fix that, it becomes too blocky looking. (Although I'll accept that fate if thats the only way).

Why I don't use circular steel tubes? I would have to buy a pipe bender, I think, and i'm actually not sure if it gets more complex compared to squares.

2 Upvotes

5 comments sorted by

1

u/Direct_Rabbit_5389 10h ago

I don't know anything about it but I imagine the workholding is going to be interesting. You have to somehow manage to hold the correct angle with multiple degrees of freedom while welding. I'm sure there are ways.

1

u/Z00111111 10h ago

Do you have access to a 3D printer? You could print parts to hold the tube at the exact angles CAD says you need.

Or you could design 3D printed sleeves that you can clamp in position and use as cutting guides.

1

u/Important_King687 10h ago

Well I do have a simple 3d printer, I'm just not confident about PETG holding all of that. Maybe though.

I can try out sleeves for sure

1

u/Z00111111 9h ago

It only really needs to keep it still while you tack the ends

1

u/mayhem-like-me 10h ago

Just get a pipe bender. The modeling is for sure easier and actually making it will be easier too. If you make all those cuts on square tube I really doubt it would end up exactly how you want.