wfbrgb
05-08-2012, 02:01 PM
I am using a 3 month old Desktop 24x48 with a spindle. At the moment, we program everything in Partworks. We are using it in high school shop.
Initial cuts were fine, mainly imported jpg logos and simple Arial text. Previews in Partworks continue to look fine, but problems are appearing in the cuts.
I started to get some weird results when using "non-standard" fonts. I don't remember the fonts in question, but if I strayed away from Arial or Times the first pass would be fine but the second, deeper pass would shift to the positive Y axis about 1/4"
Then we tried another jpg and text combo. The text worked fine at 1/16" with a 30 degree bit (two passes for depth) but one letter from the first word jumped into the iddmle of the word and the logo which had been clearly off to the left of the text moved about 8 inches to the right and overlapped the text.
Lastly a jpg design was working fine. About half of the design was cut and then the other half of the design shifted about 1/2" to the left (single pass with a 90 degree bit).
The direction and errors are not constant.
I do get a grinding sound when the machine turns a curve so I was thinking maybe the feed rate was too fast and that throws the cuts off, but the text and logo combo cut everything fine, it just squished a 15 inch design into 8 inches with overlapping elements.
I can add whatever details might be useful. I am pretty new to Shopbot but not CNC.
Initial cuts were fine, mainly imported jpg logos and simple Arial text. Previews in Partworks continue to look fine, but problems are appearing in the cuts.
I started to get some weird results when using "non-standard" fonts. I don't remember the fonts in question, but if I strayed away from Arial or Times the first pass would be fine but the second, deeper pass would shift to the positive Y axis about 1/4"
Then we tried another jpg and text combo. The text worked fine at 1/16" with a 30 degree bit (two passes for depth) but one letter from the first word jumped into the iddmle of the word and the logo which had been clearly off to the left of the text moved about 8 inches to the right and overlapped the text.
Lastly a jpg design was working fine. About half of the design was cut and then the other half of the design shifted about 1/2" to the left (single pass with a 90 degree bit).
The direction and errors are not constant.
I do get a grinding sound when the machine turns a curve so I was thinking maybe the feed rate was too fast and that throws the cuts off, but the text and logo combo cut everything fine, it just squished a 15 inch design into 8 inches with overlapping elements.
I can add whatever details might be useful. I am pretty new to Shopbot but not CNC.