A worry with the laser cutter is fumes from the cutting condensing on the focussing lense, leading to all sorts of badness. Additionally, cutting materials like acrylic is improved by having an air stream to blow the melted plastic away. Accordingly, I decided to add air assist to the laser cutter. In short, this consists of adding a nozzle to ( Read more... )

Now that I have the EiBot board running the steppers, I'd like to have it turn the laser on and off too. Normally, the Egg-Bot this board was designed for has a servo to raise and lower the pen. This is controlled with a pulse width modulation (PWM) output. But I needed an on/off signal to feed to the laser. Looking at the documentation,I ( Read more... )

The controller board that the laser cutter came with is designed to connect to a PC with a parallel port. I planned from the outset to replace this. The board I chose to use instead is the EiBot Board, a derivative of the UBW (USB Bit Whacker) board. This board was designed by Brian Schmalz for the Egg-Bot, a little robot for plotting on eggs, ( Read more... )

I didn't get a reply to my email for a couple of days, I assume because they were celebrating the New Year. Then I got a note reading:

1. NOw we comfirm your machine is 110V 2. Please check the laser tube has the broken or not inside.  and then tell us, because we think it is mostly the laser tube broken Much apprecaite
I explained that the ( Read more... )

I decided to buy a cheap Chinese laser cutter, with the intention of ( Read more... )