cnsranch
03-19-2014, 03:54 PM
Been working on some corbels for a customer - their thickness has to be correct in order to fit into slots in his cabinet.....
He gave me the one good one he has, and I scanned it, etc. Carved 3 or 4 tests to see where I am, and this is what I've got......
I've solved my alignment problem with my two sided carve on the corbels, but I've got a small thickness problem - maybe the bottom line is that I'm expecting too much from my machine.
If you look at the mpc below, you'll see that I have the depth of the carve at its thickest at .002. I want the finished thickness to be .375 (3/8")
Now, the board thickness is set to .383 in Designer. If you take that and subtract the .002 from each side, you should get 3.77 - pretty darned close.
I used my drum sander and a digital gauge and started with right at .383 for the real board. Finished carve actually took about .03 from each side, not .002. So, I ended up with a thickness of .320, not .375.
I can start with a thicker real board, say, .430. If I do, and all other things are equal, I should get a finished thickness of .430 - .06 = .370......still close enough.
I'm using a sled.
What do you think - again, am I expecting too much??
He gave me the one good one he has, and I scanned it, etc. Carved 3 or 4 tests to see where I am, and this is what I've got......
I've solved my alignment problem with my two sided carve on the corbels, but I've got a small thickness problem - maybe the bottom line is that I'm expecting too much from my machine.
If you look at the mpc below, you'll see that I have the depth of the carve at its thickest at .002. I want the finished thickness to be .375 (3/8")
Now, the board thickness is set to .383 in Designer. If you take that and subtract the .002 from each side, you should get 3.77 - pretty darned close.
I used my drum sander and a digital gauge and started with right at .383 for the real board. Finished carve actually took about .03 from each side, not .002. So, I ended up with a thickness of .320, not .375.
I can start with a thicker real board, say, .430. If I do, and all other things are equal, I should get a finished thickness of .430 - .06 = .370......still close enough.
I'm using a sled.
What do you think - again, am I expecting too much??