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Gerald ghosting when engraving #646
I noticed a similar issue when cutting a circle of about 60 mm diameter. I thought it hadn't cut through and did the cut again. There was a difference between the 2 lines (less than 1mm?), so that slivers were cut from the edge. From: Adrian McEwen Sent: Friday, 12 January, 11:29 Subject: [DoESLiverpool/somebody-should] Gerald ghosting when engraving (#646) To: DoESLiverpool/somebody-should Cc: Subscribed Amy reported that Gerald was having problems when engraving yesterday. For example... — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub<#646>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AMNY0I-F09ovxNkPFBATsOq40EZsW1NTks5tJ0H7gaJpZM4RcKki>.
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.