recutting the same design shifts the cut even after manual re-Home

[dlarue]

A K40 user is trying to recut a design over and over and said that after the first cut and putting in a new piece of wood, the next cut ends up being shifted from where the first cut was. He tried unChecking reHome after cut and hitting the home button manually but said that gave the same result, a shifted next cut.

Is this a bug or is there a way to prevent this?

[hamishcoleman]

Hey, @dlarue, unfortunately this is just a copy of the upstream project - and I don't think the upstream has a bug tracker - your best bet is to email him: http://www.scorchworks.com/K40whisperer/k40whisperer.html

That being said, I just fired up our k40 and did some test cuts - I could see an error similar to what you describe. I tried setting the repeat count to 4 and traced a simple test pattern and could see that the first cut was on a slightly different path to the next three cuts - specifically, it looked like the circles were slightly squashed.

[tatarize]

It was actually totally a bug though. It's since been fixed. Basically Scorch was returning to the start in the wrong mode after rastering bottom to top. He tried to do this at speed but the G-mode was set which caused it to do bad things.

You would have prevented it by rastering top to bottom. Or fixing the overall code. I notice this code base also missed v.25 of the sourcecode. Also, do check out MeerK40t. ( https://github.com/meerk40t/meerk40t ). Made to be much more hackable and bug reports.