# Help creating bodies
**URL:** https://discourse.shapr3d.com/t/help-creating-bodies/28302
**Category:** Modeling Questions
**Created:** [October 7, 2023, 6:41pm UTC](https://discourse.shapr3d.com/t/help-creating-bodies/28302 "2023-10-07T18:41:02Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@UCS308](https://discourse.shapr3d.com/u/UCS308)
#### Post date: [October 7, 2023, 6:41pm UTC](https://discourse.shapr3d.com/t/help-creating-bodies/28302/1 "2023-10-07T18:41:02Z")
i created the attached sketch, extruded it out and then marked it up for mortise and tenon joints thinking i could use the subtract tool to create the bodies i need, which i can’t. Is there a quick method for separating out the bodies i need. i usually just draw the joints but i want to find a faster way.
If this is not the best section for this question just let me know and i’ll move it.
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### Author:  [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)
#### Post date: [October 7, 2023, 9:10pm UTC](https://discourse.shapr3d.com/t/help-creating-bodies/28302/2 "2023-10-07T21:10:10Z")
One way is to use a series of **Split Bodies** followed by some **Unions**.
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### Author:  [@UCS308](https://discourse.shapr3d.com/u/UCS308)
#### Post date: [October 8, 2023, 12:32am UTC](https://discourse.shapr3d.com/t/help-creating-bodies/28302/3 "2023-10-08T00:32:12Z")
Thanks for that. And that does solve the problem du jour, but I think I am approaching this wrong. Conceptually maybe.
I got to the drawing I posted, because every time I tried to extrude (a tenon) from a face that was at 75 degrees, it was extruding at 75 degrees and I needed it to extrude at 90 degrees, I tried creating a construction plane, but then I lost all of the layout precision required to accurately layout the tenon.
So can I ask. What is the correct way to extrude at 90 degrees from a face that is NOT at 90 degrees.
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### Author:  [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)
#### Post date: [October 8, 2023, 2:25am UTC](https://discourse.shapr3d.com/t/help-creating-bodies/28302/4 "2023-10-08T02:25:05Z")
If I understand your question correctly and as far as I know, there is no way to extrude from a face that is not at 90°, but there are workarounds. Not sure if this is what you’d like to do.
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### Author:  [@UCS308](https://discourse.shapr3d.com/u/UCS308)
#### Post date: [October 8, 2023, 3:11am UTC](https://discourse.shapr3d.com/t/help-creating-bodies/28302/5 "2023-10-08T03:11:17Z")
Yes. Thank-you that is faster than what I finally did.
Which was to create the sketch on the angled face and copy - project - it onto a construction plane, which I then rotated to 90 degrees and pulled the tenon out. But your solution is quicker. Much quicker…
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### Author:  [@Stephen](https://discourse.shapr3d.com/u/Stephen)
#### Post date: [October 8, 2023, 2:24pm UTC](https://discourse.shapr3d.com/t/help-creating-bodies/28302/6 "2023-10-08T14:24:01Z")
Excellent solution Mike 👍
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### Author:  [@UCS308](https://discourse.shapr3d.com/u/UCS308)
#### Post date: [October 12, 2023, 9:24pm UTC](https://discourse.shapr3d.com/t/help-creating-bodies/28302/7 "2023-10-12T21:24:45Z")
With Mike’s help and suggestions I managed to build the model as follows.
Now I would like to change things like the dimension of the wood used. Right now it is 20x20mm I want to change it to 20x35mm and have the model update. Is that possible right now? Do I have to switch to the parametric beta?
