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Discussion in 'Laser Cutters' started by Kyo, Apr 9, 2017.
3-Axis CNC Laser Engraver running grbl 1.1 in laser mode and Laserweb4.
Kyo published a new build:
Read more about this build...
Nice little build. I have built something similair.
Sorry for the slow reply, been busy digging the foundation for one of my more ambitious projects and have been away from the forums / email as of late. Thanks, it has been a very fun tool to have on hand. It has been doing a number of side projects the last few weeks. I never would have imaged how useful a laser is. I am really looking forward to stepping up to a CO2 laser at some point.
I love my lasers, in addition to a diode engraver I have 3 CO2 lasers. Can't imagine life without them.
Any videos of it cutting?
I have a few videos. Just need to find the time to edit and upload them to youtube. As soon as I do I will make sure to post a link here.
Thanks, looking forward to it...
I am in the process of building your Stinger Laser as well, however have a question related to the Z-Axis. How is the lead screw seated at the bottom? The front X-axis has a pocket hole for what it looks like a bearing or something. What did you use for that? Unfortunately your BOM doesn't mention any of that.
BTW Great build!
Bearing and Lock collar same as used on a c-beam linear actuator. Here is a Z/X axis assembly animation and demo video that shows how it all goes together and works.
Super! Thanks for the info. Currently I am gathering all the parts and hopefully early next year can start the assembly
D*** you Kyo! I was just getting ready to design my z axis for my laser cutter and this thread pops up again. I really can't improve it, so you sucked the fun out of me designing my own. I wish I would have seen it sooner, I would have it printed by now. I was going to do a similar mount, but mill the part that comes into contact with the v-slot out of HDPE and attach it to 3D printed parts. I guess I don't need to. Is that stepper from an Epson printer/scanner? I just ripped apart an old one and found a similar stepper. I think it was an EM-600. If so, how many steps per revolution is it? I wanted a light-weight stepper since it will be getting moved about fast and I wanted to keep the weight of the gantry down.
For the Z-Axis stepper a round 0.9deg Thin Nema 14 Stepper Motor Bipolar 0.5A 7Ncm/10oz.in is used. You can see also in the parts list
@Giarc haha Yeah the printed slide worked out way better then I thought it would. On a laser system the z-axis does not move very far and not very often. It helps make a compact sub assembly with a very low total weight to move around. Sacha is correct, The stepper I used is a Nema 14 I grabbed from amazon "Here" I had it laying around from a light weight direct drive extruder I built a while back. I have used nema steppers (14 and 17) from printers before. I do not recall running across a em-300 myself however. The little I can find online about it. It does seem to be a 4 wire bipolar stepper of similar form factor to the nema 14 I used. So it very well may work. No harm in giving it a try if it mounts up. Figuring out if it is a 1.8 or 0.9 should not be to hard once it is moving the z-axis and the steps per can be adjusted accordingly.
Thanks for the info. I found that it is a 7.5 degree stepper, byt it is really small. I think i will just buy a nema 14 like you used. I have a scrap piece of 3/16-18 threaded rod that fits nicely in my 5mm to 8mm shaft couplers i bought when I built my eggbot and the two 8mm pillow block bearings I had left over from my cnc build.
It is nice to use all the leftover parts for a new build. I even found Tap Plastics sells acrylic cut offs for $1.50/ pound. I needed about 144 square inches and a 12x12 piece was $14. The 11x14 "scrap" piece I bought along with several other pieces (total of about 4 square feet of 1/4 inch came to less than $7. Weird.