Welcome to the Onshape forum! Ask questions and join in the discussions about everything Onshape.
First time visiting? Here are some places to start:- Looking for a certain topic? Check out the categories filter or use Search (upper right).
- Need support? Ask a question to our Community Support category.
- Please submit support tickets for bugs but you can request improvements in the Product Feedback category.
- Be respectful, on topic and if you see a problem, Flag it.
If you would like to contact our Community Manager personally, feel free to send a private message or an email.
Toy coaster track
kohinoor_basu
Member Posts: 9 ✭
in Drawings
Hi,
I am working on a toy coaster track. My first crude attempt can be seen here - https://cad.onshape.com/documents/e4d5d804d5c21cb23d8d2a9a/w/669ac9f5575bff339ebff0e7/e/9d8feefb7f146d2ae57e3498. As you see, the track gets twisted at the end of the loop. Is there a way to get this type of track done without using the complex bridging curve I have used. I am sure there is a better way of achieving this lot simpler.
Any help would be appreciated.
Kohinoor.
Tagged:
0
Comments
Try the Lock profile direction:
you will have better luck with a loft & path with this
@MDesign thanks for the tip. Loft and path is the way to go.
Regards.
I keep seeing this as a suggestion but it seems to just keep the profile locked in space instead of normal to the curve. and creates self intersecting geometry. I think I need to find the tutorial again to study up on that if its supposed to do something different.
My 2c worth. I like the sweep since it only needs 1 profile sketch with lock profile direction as Greg noted.
This one has a fairly simple pattern but I can see where complexity could build for sweep path on a busier track.
https://cad.onshape.com/documents/4bcbae0784f02710cb82f364/w/9fe7f6cd51ebd954ff54e999/e/430b3b2778f5c934a438489f
@kohinoor_basu I've led you astray. My apologies. @glen_dewsbury has helped me see the light. Profile direction lock with the front plane as the lock was the solution. I didn't quite have a grasp on how those locks worked yet. They don't come up much in the stuff I work on. Also I see you've been playing with lofts with paths. You don't need a different loft with each segment of the path. that's a lot of extra sketches. just a profile at the start and the end. and pick all the segments in between for the path. Much like the sweep with one profile.
The solution is in my post at the top of this thread.
Lock profile direction does indeed (as the name suggests) lock the profile to a given direction (e.g. a plane, a Mate connector primary axis etc etc)
The What's New from release 1.174 (Dec 15, 2023) when we introduced these controls has a short but nice example of these.
This worked. Thanks a lot, here is the track with sweep -
https://cad.onshape.com/documents/e4d5d804d5c21cb23d8d2a9a/w/669ac9f5575bff339ebff0e7/e/2a5bf2fea0b1bb71e1318512.
Looks ok, but I have a question. I am not able to make the bridging curve to look like the one its bridging. Any help will be appreciated. Otherwise I now have full grasp of this.
This forum is really stellar. Thanks a bunch folks. I will have lot of fun with my 3D printer and Onshape.
looks like your bridging curve is functioning fine. maybe you already figured it out since your post? if not, post a pic with explanation of what's not working.
@MDesign ,
I am not able to make these two sections identical. I have tried to play around with the bridging curve a lot, but just cant make left section identical to right section.
Otherwise I have good with the whole process.
Regards.
Probably easier to do it than type it… https://cad.onshape.com/documents/d68e6f4831814afbc23b13d4/w/62d391536cdb04392ff97e0b/e/b1eca036cf02737dec25683d
Alternatively, https://cad.onshape.com/documents/d68e6f4831814afbc23b13d4/w/24fb1313ad79593c70c6e3dd/e/b1eca036cf02737dec25683d
Wow, this is so good!!! Much appreciated.