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Gerald ghosting when engraving #646

amcewen opened this issue Jan 12, 2018 · 2 comments


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commented Jan 12, 2018

Amy reported that Gerald was having problems when engraving yesterday. For example...



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commented Jan 12, 2018


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commented Jan 13, 2018

It looks like it was a problem caused by the mole grips that were clamped onto the chain drag. Here are some test cuts with combinations of clamp, no clamp, one direction, bi-directional engraving...

There's definite ghosting with bi-directional engraving, and it's worse when there's a clamp on it.

So, I've removed the mole grips, which now means that if you use uni-directional engraving it's fine. The mole grips were fitted after the new chain drag (part of #596) because it was fouling against the lid of the laser-cutter. It seems to have loosened up somewhat since then, and seems to be missing the lid now. I've run it back and forth quite a bit more this afternoon to try to loosen it even further, and I think it's okay. We'll see if anyone has any problems with it, and reassess if they do.

@amcewen amcewen closed this Jan 13, 2018

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