Files: - projects/heart_words/live_laugh_fist.ecp - projects/heart_words/live_laugh_fist.dxf

Rose 1/4" Acrylic engrave speed 300 power 40 cut speed 8 power 90

I should do engraving tests. I think I had 500-40 at one point.

There were 'echoes' or ghost lines. About 8 mm to the right or lower right just when cutting up at about a 45 degree angle, the right-rising parts of the heart. But I have seen them also on vertical lines.

Attempts to avoid the 'echoed' lines.

• left paper on top and bottom
• put beer cardboard underneath, in case it is a reflection issue.
• did the outline cut first, so that the paper and cardboard have a chance at defense.

The cardboard on the bottom shows no signs of the ghost lines. And the power setting is so close that the 5ish mm acrylic cut, but not the paper underneath.

Significant lines on the paper on the top. The paper takes the impression better than the acrylic of whatever is causing this, so you can see a whole path of 'destruction.'

If you look you can see more intense burning in the center of the dark line.

Another try at not getting ghosts...

The 'right' answer is to figure out what is generating them. But I also want to cut. So...

I am cutting a s50 p25 heart, but not the rest of the elements. Then I will cover the areas that get ghosts with foil tape.

Yes, a tin foil hat for my projects.

My theory partially worked, but there was flame coming out as the paper on the acryclic burned. I am going to try multiple passes at lower power.

The flame appears to be because my air hose came off and was providing oxygen to the laser while it cut through paper. whoops.

three passes of s20 p75 cut fine. But still marked the plastic some.