dubstar_04 wrote:1n2 wrote:Hi Dan
I tried to run the file for the kindle rest.
It loaded in portrait with the hinge bit at the bottom.
I downloaded it to the laser (knowing it would probably be too big for the cutting bed that way up) adjusted the power settings to cut on card (incidentally I see your setting are set VERY high for ply wood is your beam lined up?).
When it started it began at the top (ie the home position) with the hinge bit so it has inverted from that on the screen.
I tried rotating it 90 degrees this time it started not only upside down but not rotated??? I cleared my memory and restarted the pc but it stayed the same.
Did you make the drawing or is it one that was available somewhere?
Do you have a CDR of it for me to try?
John
I havent been able to use the laser for a while as i have been busy on other projects.
I have done some testing with power setting with you saying that 75% is high.
Well my machine only just cuts through 3mm birch Ply at 75%, in some places it doesnt fully cut through.
If i want to be sure that the piece if fully cut i have to use 90% power.
When using PPI it only uses 8 Amps, regardless of the power setting, without PPI it is about 17 Amps at 100% power is this correct?
I am still trying to track down the problem of missaligned cuts also.
Hi Dan
Regarding power if the lens is not dirty then
My guess would be either your alignment is bad or the work piece is out of focus I cut 6mm acrylic easily with 50% power setting at a speed of 3 (agreed this is with air assist.)
I posted some boxes I had made with 3mm birch ply. these were cut at a speed of 13 and power set to 41.
18Mamps seems to be the max (100%)for a 40 watt tube according to the guff I have read. (that is if I understood what I read correctly)
and further it seems that 100% in the Lasercad software does not equal 100% (18Ma) on the laser 18Ma seems to be achieved way before 100%
now the miss-alignment.Is it happening with ALL your drawings?
I hope I am not teaching grandma to suck eggs...this is how I would go about it (and did so to find two faults.....1 caused by me, loose connection, and 1was a bad microswitch)
By a process of elimination we should be able to sort it.
If its happening consistently with everything I would say to look at settings.
If it happens randomly ie in a different place each time with the same drawings I would look for a loose connection.
If its happening with just that drawing (or all drawings from the same source) I would look to the drawing.
My method would be make a very basic drawing (using Lasercad thereby eliminating corel draw from the equation) that engraves a shape then cuts the engraving out. By keeping it simple to start we should be able add tests one thing at a time.(sorry if this is obvious but sometimes when ya too close to the elephant all you see is grey)
John
PS did you draw the kindle rest or get the file elsewhere?..
