Square trestle leg profile

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Square trestle leg profile

Postby maverick0312 » Thu Jul 02, 2015 5:39 am

I'm wondering if any of you could help me out? Sorry if its posted in the wrong section.

I’m new to Aspire 8 (1 week in fact). I have watched most of the training videos and tried my hand with most of them. I have to say it has a lot to offer, but I haven’t really learned all of the terminology so you will have to bear with me.

For this project I'm trying to make a 4 sided table leg that is 26 inches long and 8 inches in Width/diameter like in the attached photo. I know how to make a round leg using the wrapped job setup with the same profile and it all works out great just obviously round not square. I have attached the DXF leg profile that I drew up in AutoCad 2013. Do any of you have the patience to show me how this is done?

Would it be better to use a 4th axis (A axis) that rotates it 90 degrees after profiling each face or make a jig that it sits in and just flip it manually.

This is a gift to a family member so any help would be much appreciated.
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Re: Square trestle leg profile

Postby mike1966 » Thu Jul 02, 2015 7:04 am

I make tables similar to that, the blocks on the top and bottom are done seperate on the table saw and router table because they are not router bit profiles and would have to be carved if done on the cnc.
I use the indexer to make these and edit the code so it will cut the first side then rotate and cut the next.
I attached the G-code for a roughing toolpath, I added some spaces then the code to rotate 90deg you will also need to change the Z height before it rotates, i put a note in the g code and changed it to 3in you'll probably want less.





pedistal table.jpg
Attachments
roughing toolpath.txt
(114.13 KiB) Downloaded 106 times
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Re: Square trestle leg profile

Postby TReischl » Thu Jul 02, 2015 2:57 pm

Making those legs on a cnc machine has to be about the slowest method possible.

Usually square forms can be cut easily on a bandsaw. Layout the profile on all four sides. Cut one side, keep the scrap and tape it back in place. Wash, rinse and repeat 3 more times.
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Re: Square trestle leg profile

Postby mike1966 » Thu Jul 02, 2015 3:20 pm

Cutting those on the cnc is slow, it takes about 22min per side, I cut the blocks and flat section on the table saw and screw them on to the pedestal
When the pedestal is cut on the cnc it needs almost no sanding and while it is being cut I can get the table top finished, so it saves me a lot of time.
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Re: Square trestle leg profile

Postby Dclifton2 » Thu Jul 02, 2015 3:51 pm

see if this will help. and yes a 4th axis would help a lot.
Don Clifton
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trestle leg sq.crv3d
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Re: Square trestle leg profile

Postby Rcnewcomb » Thu Jul 02, 2015 4:28 pm

See this thread: ->Link

Gary Beckwith (garyb) cuts them 8 at a time on his table without using an indexer.

Gary says:
I just set up a 2 rail sweep to match the width of the 8 leg blanks.(plus a minor over run)
Set blocks on the table to push the blanks against for registration
Clamped the blanks together and ran machine relief in raster across the 8 blanks. I also clamped dunage (scrap 1x4) on the sides to control chip out
Rotated each blank 90° re-clamped and re-ran the toolpath, repeated for all sides
You will see I left an inch or so on the end to keep the blanks in the horizontal plane, which were removed at the mitre saw later
This is a more efficient way to cut tapered legs than using the indexer

Image
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Re: Square trestle leg profile

Postby maverick0312 » Thu Jul 02, 2015 10:54 pm

Dclifton2 wrote:see if this will help. and yes a 4th axis would help a lot.
Don Clifton


Don, that is exactly what I had in mind thanks. Could you explan how you went from my drawing to yours? What is that type of renderation called for future sake maybe I could find some totorial videos online. I have a lot of other leg profiles that I would like to do and the sizes change per application.

I'm thinking of following Garyb's method and rastering both legs side by side too save on time. 4 rotations instead of 8. So my 2 rail sweep will have to extend 3/4" past each leg making it around 17.5 inches wide

Thank you everybody that posted answers
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Re: Square trestle leg profile

Postby Dclifton2 » Thu Jul 02, 2015 11:07 pm

I'll send you a PM private measage.
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Re: Square trestle leg profile

Postby maverick0312 » Fri Jul 03, 2015 1:05 am

Sorry I can't seem to open or send private messages. I'm having the administrator look into it. My email is mathew . Miller at rogers . com if you can send it that way or will have to wait till I get this problem resolved.

Thanks
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Re: Square trestle leg profile

Postby W. Marks » Fri Aug 30, 2019 9:12 pm

I have some projects coming up that show a leg similar to the eight shown, although not quite as detailed, but with a tapered pocket. Am I correct in assuming that I will need Aspire to do these sort of projects? We currently V-Carve Pro.
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Re: Square trestle leg profile

Postby dealguy11 » Sat Aug 31, 2019 11:11 pm

The 8 legs shown could be done with a moulding toolpath, which is available in VCarve Pro.
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