Recent content by Joelaw

I have re-mounted my Laser on the Z axis faceplate to the bottom and can now get between 0 and 2 inches above the work piece. Now my problem is that I cannot focus that close. The lens is all of the way out of the module and at 1 inch the spot is dispersed too big. I have both 3 element and...

I have a NDB7875 laser with a G-2 lens and tried to cut 1/16" birch plywood with bad result. I tried 6 passes at 3 ipm and all I get is burned wood. one pass at same speed gives me about the same depth of cut but both are about .005"-.010" deep. I have a friend with a Darkly Labs Emblaser A4...

Please keep us posted with your filter results. I Am driving at 1.5 amps. Joe L.

rusirius, Thank you for a lot of information on your last . I have changed my settings to what I interrupted from your posting and am getting better results. I don't have a really good test picture and model to test. Just some jpg files I downloaded from the internet. I am also using Birch...

rusirius, I received my laser driver from Russia today. I am wondering just how to set and measure the current setting? I see that you are using a nice volt/ammeter in your control box. Can you tell me the model and where you got it? Will it tell you the current across the laser directly...

rhd, I got some time to look at the problems with my laser driver and found that the 12v supply was bad. Under load it was producing about 4.5v causing the on period to reduce the voltage and cause the laser to pulse. I ordered a 12v 10a power supply that should arrive on Monday. Will try to...

rusirius, Man you have got it. The picture looks great. That is exactly what I am trying to do with mine. I ordered the laser driver from Russia and it is supposed to be here by the end of February. I am using MACH 3 so mine will be a little different. I am using the 'B' axis to control...

rhd, I was a little too hasty. Now the Max is pulsing the laser all of the time. I removed the mods and re-installed the changed components and it is still pulsing. ????? Something probably wrong in the Max board again. I ordered an analog laser driver from Russia (the same as rusirius) but...

rusirius, You are using the cnc xpro board in the schematic. The version 2 is not ready from their posting. Did you purchase an earlier version or is the PCB available by itself what you used? If the PCB is available now I think I will purchase one to try my luck. I assemble this kind of...

I think I ran across this before but could not find it again. They are sold out and no mention if they will sell again. I will keep an eye on it because if it sold they will make more. Thanks again Joe L.

rusirus, I cannot find the laser 3 amp controller from Russia you talked about on ebay. Any info? Joe L.

rhd, I have tried to burn something this morning without much luck. I then removed the mods to find the same thing. Then I got a little smarter and looked at the laser I was using and found that I was using a laser with a driver. NOT GOOD. I will have to start over with a new laser. Forgot...

Guys, I finally ventured into the 58 degree basement to make the suggested mods to my Maxium controller. The difference was dramatic in the noise level on the signal. Still don't know if this is the right approch. The control by rusirius using the counter and opamp probably is the best...

ruSirus, which linear rails and rollers are you using. It doesn't look like the rails supplied from OpenRail. I was looking at IGUS rails but they come out to be pretty expensive even for the cheap ones. The rails and rollers seem to be about the most expensive parts for this kind of...

Okay, I am mostly here again. It took 14 days of hell to get out of the hospital but now that I am home getting better every day. Compliations with a-fib, and blood pressure. Still cannot stand up very long but have to get things moving again. I DO NOT recommend trying this at home...