Lofting 2 elipses around a curve.

colin_king506 · February 21

I found this on one of Too Tall Toby's YT videos - it had no video for it, but I wanted to do it anyway; furthering the development f my skills. I was trying a Loft, but encountered an error that I couldn't resolve.

"Curved Alignment Post" — Colin King

eric_pesty · February 22

Use the the "guides and continuity and add the circular "paths".

Note that if you search public documents for "24-08-17" you will find lots of examples of how to solve this part, for example:

https://cad.onshape.com/documents/c23d648561898b455a24676b/w/a48306a194dd22ebf52e7cd3/e/257a793b872789dc900f95b2

colin_king506 · February 22

I have tried several ways (your suggestion first) east of Sunday and I have fail all times. I was annoyed so much I deleted the entire file. I decided to send a message directly to TTT regarding this and then begin again on a clean slate. Thank you for your response; must have been an error previously with creating the geometry.

colin_king506 · February 22

Thank you for your response! —- I tried several methods - your suggestion 1st. After searching the responses to the errors and getting more confused I felt that it was best to totally delete the file and start afresh. I sent a message to TTT (through his website) regarding this project and await a favorable reply.

eric_pesty · February 22

You have to make sure your guide curves are actually "piercing" the profiles, which is clearly not the case at the bottom left in the first picture above.

colin_king506 · February 23

That was one of the procedures to try and it didn't work; actually I threw in the towel. Oh well. It is only a practice exercise, one that I figured be interesting, will revisit it another day. Thanks for the follow-up.

Stay Creative,

MDesign · February 23

https://forum.onshape.com/discussion/comment/114313#Comment_114313

Did you play with connections on the loft?

john_lopez363 · February 24

@colin_king506 … keep practicing… you'll get it. As previously stated the basic issue is your Loft is not precisely defined, there are several important constraints that must be correct for this to work. You can follow along in the link below. Pay close attention to the constraint, specifically around the ellipses and guide curves used for the Loft.

https://cad.onshape.com/documents/e32a90281dc561cf3f5462dd/w/3df15d13eb3a662cb71af2d3/e/a1b850d31e44fc8e5ebee61d

Screenshot 2025-02-24 at 10.25.24 AM.png

colin_king506 · February 24

Thank you John. I have begun the part again paying particular attention… as you stated… to constraints; etc. I am not going to forego looking at what you have done at this time, I am going to see if I can derive this on my own first.

For whatever reason this was giving me fits and I had to separate myself from it, do something else and return with a new perspective,

colin_king506 · February 26

I give up!!!!!!!!!!!!!!!!!! Can you recommend some practice exercises that deal with Lofts around curve.

john_lopez363 · February 26

@colin_king506 …https://learn.onshape.com/learn/learning-path/onshape-fundamentals

Take the training offered by OnShape. It's appears to me that you are missing some of the basic fundamental principles. This is the best way to learn OnShape sans an actual in classroom course.

MDesign · February 26

https://learn.onshape.com/learn/dashboard?query=loft

colin_king506 · February 27

Every other project I go back and try again. I did follow some Onshape training videos and saw my mistake(s) and adjusted accordingly, I was able to successfully complete the loft on a curve using the spline command. Did not try a curve, but I would assume (your mileage may vary with that word) work similarly.