How to draw on a plane that's diagonal to existing part?

todd_beaulieu

Hello. I'm just learning OnShape and could use a nudge in the right direction. I've made and printed some mostly simplistic 3D parts with OnShape, but I'm stuck on a concept that I need for a part cooling fan chute. I designed a carraige fan mount and now need to direct the air from the fan's output to near the extruder tip. I need for the chute to be angled inwards at some angle, towards the tip, but also backwards a little to center the tapering chute relative to the tip. 

Imagine two rectangles end-to-end on one plane. Now rotate one of them upwards at, say 45 degrees. Next, skew it perpendicularly by some degrees. I've been unable to figure this out, or even know how to seek instructions on it.

Thank you for any tips.

brucebartlett

If you post a link to a public do you will get more specific help, it's a bit hard with info provided. 

Maybe you need to add a new plane angled off an existing plane or face to sketch on. If modifying existing geometry "move face" by rotation could help, also, "loft" may help to create the geo you describe. 

todd_beaulieu

Thank you. It does seem like a new plane.I'll poke around. This is a work in progress below, but if you look at the "air duct" in this doc, if I install it up, into a fan, it will obviously be parallel to the fan outlet in the Y axis. One way of thinking about it is that I effectively need to grab that top insert (6 mm extension that fits up into the fan) and twist it ... say, by 20 degrees. I attached a photo of the printed part. You can see that the air is being direected in front of the extruder. I'm well aware that you may throw up at the site of my design (steps taken), so don't be afraid to point out a better approach. I need more training.

Thanks!

https://cad.onshape.com/documents/02e9a685ad869ca4c4161c42/w/c56c3a61e789fbddd5e60310/e/197ee20e28b72d8ef7f9c032

larry_hawes

I post here to see how much I can learn and am far from an expert but here's an attempt at what you might want. So hard to figure out from the text you posted but hope it helps. Basically I used a loft to 'twist' the top which may or may not leave with a usable top piece. Any way may be some help. Curious as to what you end up with.

https://cad.onshape.com/documents/f91a2cc915f225f0d70b7bf6/w/46407ee99f42412bb604b04e/e/14f05d81686750d14e566f85

As I look more closely it doesn't seem like the top piece would be usable with that twist. Maybe try a loft/twist lower on the part?

larry_hawes

Another look. Twisted the lower part.

https://cad.onshape.com/documents/f91a2cc915f225f0d70b7bf6/w/46407ee99f42412bb604b04e/e/d1f4cbc6d729db7c6ad15997

todd_beaulieu

Hi Larry. I'd love to look at what you did, but I get an error, saying that your document is not accessible. Could it be private?

larry_hawes

Yeah I think it was private try this link again.

https://cad.onshape.com/documents/f91a2cc915f225f0d70b7bf6/w/46407ee99f42412bb604b04e/e/d1f4cbc6d729db7c6ad15997

todd_beaulieu

This looks really interesting. Thank you for taking the time to do this. I'll be studying it.

larry_hawes

todd_beaulieu said:

This looks really interesting. Thank you for taking the time to do this. I'll be studying it.

Very curious if it helps in some way as I mostly thrash through OnShape trying to solve issues.

larry_hawes

Did you ever figure this out? Did my efforts help in any way? Don't leave me hangin' bro....