Heart shaped box

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cusoak
Vectric Wizard
Posts: 367
Joined: Mon Nov 06, 2017 1:57 pm
Model of CNC Machine: Shapeoko 3D XXL

Heart shaped box

Post by cusoak »

I made a 1.5 'high heart shaped box with a heart shaped pocket off set by .25 from the out side 1.25 inches deep.
Then I used the same heart shape and made a lid. Using the same vector as I did for the pocket and the out side shape I cut a pocket there. Then another toolpath to cut the top out.
Well to my surprize the top did not fit into the pocket in the bottom.
So I am trying to figure out to set up to cut the inner shape smaller in the top to allow it to fit
Is there some way to do a inner cut allowance.
Or how do I make the top fit into the box.
Jeff

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IslaWW
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Joined: Wed Nov 21, 2007 11:42 pm
Model of CNC Machine: The Ultimate Woodworking Machine
Location: Marquette, MI, USA

Re: Heart shaped box

Post by IslaWW »

My guess is that you used the "default" setting of climb mill. Cut conventional direction
Gary Campbell
CNC Technology & Training
The Ultimate Woodworking Machine
GCnC411 (at) gmail.com

cusoak
Vectric Wizard
Posts: 367
Joined: Mon Nov 06, 2017 1:57 pm
Model of CNC Machine: Shapeoko 3D XXL

Re: Heart shaped box

Post by cusoak »

Not sure how changing direction of the cutter that will make the area of the top that needs to be smaller any smaller when it is still following the same vector.
That is what I needs to happen.
I thought I saw a video some where that showed how to fit 2 parts together using some offset that all you need to do was input a value.
Jeff

ger21
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Re: Heart shaped box

Post by ger21 »

Not sure how changing direction of the cutter that will make the area of the top that needs to be smaller any smaller when it is still following the same vector.
Because machines flex, especially hobby machines like the ShapeOKO.

When climb cutting, the tool is pushing away from the part, resulting in slightly larger parts.
Conventional cutting pulls the tool into the part, resulting in slightly smaller parts.
Gerry - http://www.thecncwoodworker.com

Richard Weiss
Posts: 3
Joined: Mon Jan 01, 2018 7:16 pm
Model of CNC Machine: Inventables and Next Wave Automation
Location: North Carolina

Re: Heart shaped box

Post by Richard Weiss »

:) This is my first post on the forum so go gentle. I make small boxes on my 8 X 8 milling machine bed. I gained a tremendous insight from John Clark.

He has about 3 or 4 videos on box making.
Hope this helps you out

bravesoul
Vectric Apprentice
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Joined: Thu Sep 11, 2014 8:53 pm
Model of CNC Machine: ShopBot PRT ALPHA 48"x96"
Location: Cleveland, TN
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Re: Heart shaped box

Post by bravesoul »

If you will post your file, we would be happy to review it and advise the method to cut it correctly. Have to no issues helping.

Joe

wb9tpg
Vectric Craftsman
Posts: 152
Joined: Tue Sep 04, 2018 2:49 pm
Model of CNC Machine: Shapeoko 3 XL

Re: Heart shaped box

Post by wb9tpg »

Here is a Heart Shaped Box crv file for you to look at. Note the use of ALLOWANCE on the Toolpaths to enlarge and shrink cuts. The value comes from a document variable so you can tune the cut for your machine. I leave it a little loose coming off the machine so I can apply finish.
Heart Box.crv
Heart Shaped Box Example
(1.7 MiB) Downloaded 105 times
Gary Mitchell
Kentucky, USA

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