How the heck do you cut a super-ellipse? (1 Viewer)

[BukNaked36]

So I’m thinking that maybe the best way to get a clean, smooth, accurate and repeatable cut is to get the CNC shop to cut two templates out of Lexan (one for the rail top, one for the rail bottom). As long as I can get that done for a reasonable cost.

Then I can use a router with a guide bushing to cut the pieces (CCW outside cut, CW inside cut). I’ll have to adjust a few 16ths of an inch to compensate for the thickness of the bushing sleeve.

It will also allow me to make an additional identical table shape in the future, or I can rent it out to anyone interested in making one the same size and shape.

Or I could learn how to use a jigsaw properly…

Can you get a CNC shop to cut the wood? If you provide the curves and they have the right equipment, this would be really quick and therefore not too costly.

I've worked with pattern shops in the past that could do this no problem.

If you spec the wood you want, they also might be able to buy it cheaper than you.

Doing a little google fu - these guys could do it - https://www.adanacpattern.com/ . Although if you could find a smaller shop somewhere, they'd probably be cheaper.

 

[LotsOfChips]

Can you get a CNC shop to cut the wood? If you provide the curves and they have the right equipment, this would be really quick and therefore not too costly.

I've worked with pattern shops in the past that could do this no problem.

If you spec the wood you want, they also might be able to buy it cheaper than you.

Doing a little google fu - these guys could do it - https://www.adanacpattern.com/ . Although if you could find a smaller shop somewhere, they'd probably be cheaper.

I found a way to make the Lame curves in FreeCAD, and I found a “3D printable CNC router machine” for around $650 ($800 if you want them to print the plastic parts). I’ll post a link later when I’m on my computer (I hate trying to switch between sites on my phone).

I’m planning to build the CNC in my garage (just bought a 3D printer to make it happen), and use it to build my table(s). A bit of a departure into a couple of rabbit holes, for sure, but I’m looking at this as a potential retirement project, so spending some money on something that keeps both me and my mind occupied isn’t the worst idea (at least that’s what I’m telling myself and my wife)

 

[Buge]

1/4" upcut spiral. Like this one.

Just picked one up today. Also bought a router to go with it Slowly putting the pieces together to build a table

 

[LotsOfChips]

I found a way to make the Lame curves in FreeCAD, and I found a “3D printable CNC router machine” for around $650 ($800 if you want them to print the plastic parts). I’ll post a link later when I’m on my computer (I hate trying to switch between sites on my phone).

Link to the V1 Engineering LowRider 3 CNC Router (can also do Laser and Plasma cutting)

https://docs.v1e.com/lowrider/

 

[merkong]

Make a trammel

 

[merkong]

This.

 

[Taghkanic]

This.

Isn’t this for a classic ellipse? Superellipses are different.

 

[merkong]

Isn’t this for a classic ellipse? Superellipses are different.

Ah, yes. Good luck.