Correction capability in Carbide Create?

[jpcannavo (Joe)]

Suppose the there is some discrepancy between dimensions in carbide create and what is executed by machine, I.e. due to some error in squareness or other dimension. Is there a compensation adjustment in carbide create to correct these so that subsequent dimensions are corrected. E.g. let’s say you draw a circle, but machine cuts a very slight ellipse where say the X diameter is a fraction of a percent different from the Y diameter. Is there a correction function that can be tweaked to offset this error so now other figures are correct in XY?

[Tod1d (Tod (with 1 'd'))]

Not directly. For dimensional discrepancies you could use the Scale function. For squareness you would need some kind of Skew/perspective function.

But the real solution is to calibrate & square your machine.

[WillAdams (William Adams (Carbide 3D))]

Which machine do you have?

If you have a belt-drive machine see:

Calibrating the machines over long distances

The typical technique for machine calibration: https://my.carbide3d.com/faq/belt-stretch/ depends on precision measuring tools, and is limited by the reach of the tools in question. EDIT: It also depends on access to the MDI — if using Carbide Motion v6 it will be necessary to enable this in Settings | Options: [image] It should be possible to cut strips from a suitable blank of material, one along each axis — so we set up a square file which matches an available blank of material: [ima…

For an error in squareness you’ll need to unbolt things, square things up, then re-tighten all the hardware (ensuring that nothing pulls things out of square while doing so)

[Bigsmooth911 (Eli Smith)]

@WillAdams

For an error in squareness you’ll need to unbolt things, square things up, then re-tighten all the hardware (ensuring that nothing pulls things out of square while doing so)

I didn’t think of this when putting together my machine. I thought it would come together much more square then it did. When I finally went back to check squareness, I was shocked to find that my machine was out 3/4 of an inch out of square. I had to go back and remove all of my spoilboard slats, loosen all the T railing screws, square up the machine and tighten back all of the T railing screws. Then I rechecked squareness and then reinstalled all of my spoilboard slats.

I was having some funny cuts happening that, upon further investigation, and community posts, that my machine was probably not square. Now I will need to tram my spindle to my table and then surface my table, but that will be down the line when I get back home to the shop and can get a double indicator tramming tool.