Friday, 1 May 2015
The J48-1 I have can be air cooled, so this seems like the simplest option! The manual states that an airflow of 250cfm is required on both sides of the laser from two fans. This is quite a large air flow to achieve with two 120mm fans, do I have opted for four fans giving a total of about 450cfm. I'm also using a fan controller to regulate the fan speed from based on a temperature range of 35 to 55 degrees.
Tuesday, 28 April 2015
Fitted the ULO optics mount ready to take the head. I found ULO optics to be much cheaper than the Synrad options I was looking at. I got the compact laser mount (C-LMC), and the compact lens nozzle assembly 38mm F.L. (C-LN38) Both for £300+VAT which is less than half the price of the Synrad setup.
Sunday, 5 April 2015
Tuesday, 31 March 2015
Rather than buying a Synrad UC-2000 controller from eBay, I have modified my existing controller design to supply the required PWM signal to the laser.
This is a PWM frequency of 5khz, with a minimum tickle pulse if 1uS and a maximum PWM ratio of 95%. All according to the Synrad spec sheet.
Thursday, 26 March 2015
Well I received the PSU a few days back and have rigged up a CW test to fire the laser. I'm happy to report it does lase!
27v PSU adjusted to 30v
Here you can see the laser spot at the top right burning into the plywood. This straight from the output, no focusing head.
Thursday, 5 March 2015
I've been toying with the idea of adding a small laser to my pacer cadet 600 cnc router. I have already successfully I stalled a 2.8w blue solid state laser, that can mark and cut some materials, but not to my satisfaction. However, now I have see it can work, I plan to add a syntax J48-1 10w co2 laser directly mounted to the Z axis in place of the router.
I have found a laser on eBay that claims to output 14.6w, when they are new they deliver about 15w, so hopefully this should have some life left in it.
The laser has been OEN modified to have a 15pin D type connector to supply power and control. No key switch, and fuse has been tucked inside. I could change all this back to a normal setup, but think I will leave it for now.
I need I by the optics, which are around £700 unless I find them on eBay. And I need to modify my existing laser control electronics to generate the required tickle pulse needed for the J48-1. Unless i pick up a cheap UC-2000 controller. I missed a cheap one the other day, but no guarantee it would have worked!
More to follow...
Posted by Matt at 12:06