Laser Cut Advent Calendar 2020

Tomorrow is the 1st Advent, and right on time I was able to finish a special version of an Advent calendar for the Christmas 2020:

laser cut advent calendar illuminated

laser cut advent calendar illuminated

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Replacing a cheap Chinese CO2 Laser Tube

What is the life span of a cheap Chinese CO2 laser tube? I mean: how long can I use one these (aka K40) laser engraver/cutter tubes as used in that 50W machine I have? I have used my machine for over a year for now, and I don’t have hour meter, but I estimate it have used it for about 500 hours. I don’t have a data sheet of the tube used inside my machine. Discussions on the internet estimate the live span from DOA (Dead On Arrival) to ‘a few months with moderate usage’ up to 3000-5000h’. Well, whatever it would be: my laser cutter stopped working two weeks ago. Here is how I got it back operating again….

New Laser Tube on the Bench

New Laser Tube on the Bench

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Lasercut Plywood Board for Raspberry Pi

Need a quick way how to attach a LED, a push button and two resistors to the Raspberry Pi header? One way is to use some ‘flying’ wires. Or to use three pieces of lasercut plywood for a nice looking Raspy extension board:

Wood Board on Raspberry Pi

Wood Circuit Board on Raspberry Pi

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Using a 50 Watt Laser Cutter with tesa Laser-Labels

Laser cutter and engraver are the kind of cool thing after 3D printers which get more and more common. One interesting thing to use a laser engraver (or cutter) is to use it with tesa Laser Labels.

Tesa Laser Label

Tesa Laser Label (Source: http://www.tesa.com)

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Using a Laser Cutter and Engraver with Cellulose Acetate Sheets

I’m mostly using my 50W laser cutter machine with plywood, simply because that material is available and very inexpensive. I have used it cutting or engraving PMMA (Polymethyl methacrylate or ‘Plexiglas’), simply because that material is more expensive.

From a reader of this blog I received something to experiment with: Cellulose Acetate sheets. Time to experiment with something new 🙂

Washed off

Washed off

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