For the most part, I don't think it's worth most people building a
lasersaur with the relatively low cost (and quality, mind you) of
Chinese products. If you're a shop billing hours you can probably
afford something better, maybe even a used Epilog.
It can be a good learning experience for college-age people. Some of
the students I managed assembling a lasersaur at CMU got super
interested in mechanical/robotics things. One of the archi undergrads
said something like, "this is the first time I ever used a wrench and
made something" and went on to get a MS and PhD in Computational Design.
However, Scott makes some good points; I'll toss out some rhetorical
questions and provide my answers.
- What are you going to do with your laser cutter? Is it your personal
one, or a shared one for a hacker space or a school? Do you really need
100W and a 4'x2' bed?
For me, it pays off. I have an Etsy store and sell a lot of things cut
out of 1/4" baltic birch ply. These are things big enough that I buy
5'x5' sheets of birch and cut them on a panel saw (you know, like the
ones at box stores) located at Protohaven (local maker space). I buy 10
sheets at a time and cut media for 30 of my shelf kits:
https://www.etsy.com/shop/atelierjet?ref=simple-shop-header-name&listing_id=270030618
As part of having an Etsy presence, I'm also developing new products and
having a big 100W in my home studio is very convenient. I'm working on
a new tool stand and waiting on the laser to cut a prototype is me
wasiting time.
- Where is it going to be located? Do you have ventilation or clearance
issues?
As Scott said, having it NOT go all the way down to the floor like a
Chinese laser gives you a lot of storage space. I stack cut plywood on
one side and use the other side for my fume extractor and water cooler.
- Are you good with a wrench or software? Are you a MechE/hacker who
likes to experiment?
In my studio are the carcasses of two lasersaurs that were shut down for
a variety of reasons. I'm making some notes/drawings on doing a movable
Z bed and a rotary device. Note that I'm doing this for my own
amusement, if I need a rotary cutter we have one for the Trotech at
Protohaven.
- Do you really need a fancy interface or do just need to load-and-go
with DXF files?
The latter. All of my work is in Rhino or SolidWorks, including
organizing the DXF files for my cuts. Literally all I do on the
lasersaur is load the DXF, assign colors to speed/power, and press the
go button. I've been sort-of working on a new UI for the Lasersaur but
the only feature I really need is 2D bin-fitting. I could probably just
write a plugin for Rhino or a standalone app that does that work for me.
--
Jet Townsend, IDSA
design <
http://www.allartburns.org>
hacking <
http://www.flatline.net>
consulting <
http://www.functionalprototype.com>