Full Version: Need help and advice engraving Rowmark plastics,red core etc.
From: Harvey only (HARVEY-ONLY) [#4]
31 Mar 2007
To: Larry B (PALMETTO) [#3] 31 Mar 2007
That logic will get you in the ballpark. Nothing is accurate on lasers. The tube power varies and the non linear curve for the speed vs power, and the percentage of power really delivered.
Add to that that the pulses may be a higher power on a high power but for a shorter time.
So it will give only ballpark settings. (A guess is that it will be within 10%, but might be as much as 20% off.)
From: ab_laserart [#5]
31 Mar 2007
To: ALL
I concur with Harvey -- it gives you a decent starting point but not much beyond that. The sad proof of that is the fact that the settings I quoted you for one Rowmark product didn't work on another Rowmark product (not even close really). One thing that I didn't mention was the resolution: mine is in metric so I'm not going to try to translate to dpi right now, but I ran the passes quite close together -- about 85% of the way to peak resolution.
Ron
From: Larry B (PALMETTO) [#6]
31 Mar 2007
To: ALL
Thanks guys!
I did the test I referred to earlier. I'm going to attempt to post it here. (haven't posted any attachments yet). I ran it on the Metalgraph Plus. I used color mapping in the driver to set up 10 squares-1/2 x 1/2 and ran them at the associated speeds and power at 400dpi and 600dpi. The results are pretty evident that on my machine I got a better result with this particular material at 600dpi and slower speeds, higher power.