How do I cut this right triangle?

Post by **jimreed1948** » Wed Jul 15, 2015 7:49 pm

The attached photos shows a little project I'm currently working on. I made several of these out of wood before making some out of delrin. The drawing I made cut everything out just perfect, however, I'm looking for a different way to cut it out. I cut it out just as you see it on the top drawing and there was no problem. I have VCarve Pro and I'm not sure I can make the cut I want.

I would like to cut this as if you're looking down on the top of it. The top photo is a side view while the other is slightly tilted where you can see the top. I would like to cut the bevel on each side which is a small right triangle that leads down to the half circle bottom. I have never cut a right triangle looking down on it and not sure if VCarve will cut this way.

By cutting it this way, there is less waste.

Thanks for the help.

Post by **FixitMike** » Wed Jul 15, 2015 7:57 pm

You can cut this using the FlutePlus gadget. http://paulrowntree.weebly.com/gadgets.html

Post by **jimreed1948** » Wed Jul 15, 2015 7:58 pm

FixitMike wrote:You can cut this using the FlutePlus gadget. http://paulrowntree.weebly.com/gadgets.html

Thanks, I'll check it out.

Post by **tomgardiner** » Wed Jul 15, 2015 9:05 pm

Have you got a bandsaw? I would cut the blank out first with a bandsaw, then mount them in a pocket on my cnc table. Flute plus for the final pass or two.
What are the dimensions of the blank? Do you have enough Z axis to cut this on edge? It would take some thought to how to hold the workpiece but would make fast work of it.

Tom

Post by **Rcnewcomb** » Thu Jul 16, 2015 12:43 am

Depending on the dimensions it may be possible to turn the part on the side and machine it with standard XY moves.

Post by **rscrawford** » Thu Jul 16, 2015 2:07 pm

If I were making a lot of these, I'd make a long board in the shape I wanted by cutting the two angled surfaces on my tablesaw with the blade tilted, then using a large ballnose bit on my CNC to machine out the cove, then cutting the parts off the long board on the mitre saw.

Post by **Art Mann** » Sat Jul 18, 2015 4:18 pm

I would like to add to Russell's post a general comment that not every part that can be cut with a CNC router should be cut with a CNC router. This is quite possibly one of those cases. On the other hand, if the only tool you have is a CNC router then every project you come across looks like a CNC application.

Vectric Customer

How do I cut this right triangle?

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