Box Gadget
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- Posts: 37
- Joined: Thu Oct 10, 2019 2:44 am
- Model of CNC Machine: CNCRP 4896
- Location: Wisconsin
Box Gadget
I have a customer that has asked me to make some boxes out of 1/2" pvc using tab construction. I've used the box gadget in the past with 3/4" plywood and found that the number that you put in for tolerance really is kind of trial and error. I'm wondering if anyone has used a 1/2" material like pvc (which should actually be 1/2") and would share what tolerance number worked for them.
Only those who risk going too far
Can possibly find out how far one can go.
Can possibly find out how far one can go.
- adze_cnc
- Vectric Wizard
- Posts: 4374
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- Location: Vancouver, BC, Canada
Re: Box Gadget
I would expect no one definitive tolerance for plywood / MDF / solid wood—especially when relying on the manufacturer's specs for router bit diameter. And the cheaper the router bit the less I'd trust its stated diameter.
I regularly cut HDPE for our ceramics department (cup and bowl inserts for "throwing bats"). Half-inch HDPE pretty much is 0.500" thick. Occasionally it'll register as 0.499 to 0.498 but very rarely.
For a slip fit of insert into bat I will use a 0.005" offset on a profile toolpath. The 1/4" bits I use regularly measure from 0.249 to 0.251 inches.
I regularly cut HDPE for our ceramics department (cup and bowl inserts for "throwing bats"). Half-inch HDPE pretty much is 0.500" thick. Occasionally it'll register as 0.499 to 0.498 but very rarely.
For a slip fit of insert into bat I will use a 0.005" offset on a profile toolpath. The 1/4" bits I use regularly measure from 0.249 to 0.251 inches.
- Adrian
- Vectric Archimage
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Re: Box Gadget
The settings anyone else uses aren't going to work on your machine straight off. There are way too many variables.
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- Posts: 19
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- Model of CNC Machine: Automation Technology KL-6590
- Location: Glenview Illinois
Re: Box Gadget
Here is a YouTube video about making a storyboard for tolerances
Slot and Tab Story Board
https://www.youtube.com/watch?v=XoW4OFYlzxk
Slot and Tab Story Board
https://www.youtube.com/watch?v=XoW4OFYlzxk