All pleased with myself but

Community Laser Talk
1

My K40 has been gathering dust for some years and I have now completely stripped it all out and built a new x y bed using 2040 profile and 6mm perspex cut out on my cnc router. I now have a workable area of 550 by 320 mm. Also new MKS DLC32. New mirrors etc and all aligned and focused. However when running at 14mA I seem to get a “nice” burn but no penetration. I’ve tried slow speeds and several passes on 3mm ply but no cut through. Is my tube knackerd?

2

Can we see some examples of what your laser did to your material?

Does your machine have an air assist?

3

lightburn
lightburn1920×865 178 KB

4

I have temporarily used a very large inflated balloon for air flow…seems to work. The rightmost rectangle has 2 passes at full power (12mA) and shows no sign of cutting through.