Chris J Anderson
09-23-2014, 10:54 PM
Hi to All,
I have an issue with a rotary engraving job in my Epilog Helix.
I use it regularly with no problems.
I have a job which will become regular, engraving wooden pen blanks for a pen maker.
Because of the design of the rotary kit in an Epilog, I can't fit an item as small as a (say ½ inch diameter) pen blank in the jig, as the laser head will hit the rotary parts.
I was thinking of making a jig, with wheels each end the same diameter as the rotary drive rollers (say they're about 3 inches), and then run a threaded rod through the middle to hold the pen blank in the middle, and have the rollers full distance apart, about 18 inches.
This would then give the laser head clearance if I centred the job in the middle.
My problem is how would I correctly calculate the page height in Corel (which is normally set to the job circumference).
I have tried many times to think about this, I can't get my head around it.
Worst case example is, I would have a design going all the way around the pen, wanting it to line up without seeing the join, so it would need to be very precise. (I know this is pushing it).
So assuming the end wheels are 75mm diameter, same as the epilog drive wheels, and the job is 13mm diameter, how would I calculate the correct page height ?
So I'm engraving on to a 40.8mm circumference pen blank, but driving a 235.6mm wheel on the end.
Could it be as simple as just stretching the design for the pen to match the circumference of the 75mm drive wheels ?
Sorry if this isn't clear, its hard enough to think about, let alone explain...
Cheers,
Chris
I have an issue with a rotary engraving job in my Epilog Helix.
I use it regularly with no problems.
I have a job which will become regular, engraving wooden pen blanks for a pen maker.
Because of the design of the rotary kit in an Epilog, I can't fit an item as small as a (say ½ inch diameter) pen blank in the jig, as the laser head will hit the rotary parts.
I was thinking of making a jig, with wheels each end the same diameter as the rotary drive rollers (say they're about 3 inches), and then run a threaded rod through the middle to hold the pen blank in the middle, and have the rollers full distance apart, about 18 inches.
This would then give the laser head clearance if I centred the job in the middle.
My problem is how would I correctly calculate the page height in Corel (which is normally set to the job circumference).
I have tried many times to think about this, I can't get my head around it.
Worst case example is, I would have a design going all the way around the pen, wanting it to line up without seeing the join, so it would need to be very precise. (I know this is pushing it).
So assuming the end wheels are 75mm diameter, same as the epilog drive wheels, and the job is 13mm diameter, how would I calculate the correct page height ?
So I'm engraving on to a 40.8mm circumference pen blank, but driving a 235.6mm wheel on the end.
Could it be as simple as just stretching the design for the pen to match the circumference of the 75mm drive wheels ?
Sorry if this isn't clear, its hard enough to think about, let alone explain...
Cheers,
Chris