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FrozenGate by Avery

DIY Laser Cutter Project

Re: My holiday project - DIY Laser Cutter

Rails are all bought from eBay for $23AUD ea :)

Dan
 
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Re: My holiday project - DIY Laser Cutter

AUD! free international shipping I assume! hehe

I want 16...
 
Re: My holiday project - DIY Laser Cutter

are you going to use belts or screws?
 
Re: My holiday project - DIY Laser Cutter

T5 16mm belts :)

You can probably get the rods cheaper in the US than here, as they are being shipped over to be resold anyway.

Made up a little stepper bracket mount, and turns out my rod supports are too close to the stepper, so have to move them back a bit. Hate having empty holes :( Maybe I'll put some bolts in them with nothing attached to cover them up :)

Dan
 
Re: My holiday project - DIY Laser Cutter

Mounted up on it's frame with the lens mockup attached :)

DSCF4845.jpg


Motor in too. It mounts to those 2 holes you can see in the above pic at the back:

DSCF4846.jpg


Dan
 
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Re: My holiday project - DIY Laser Cutter

Well, Y axis is for the most part complete. Belt is on, limit switches are mounted and it runs like a charm :)

DSCF4850.jpg


Drive side:

DSCF4851.jpg


Idler side. The idler stepper (used a little stepper motor as it's easier to mount) is mounted up on 3 bolts to allow for belt tensioning:

DSCF4852.jpg


Just waiting on some bearings, bearing mounts and I can complete the X axis too. I also need to order some more belt, as the lengths I already had aren't long enough. Belt is expensive though! $9.90/metre and I'm going to need around 5 metres of it :(

Video (Might not be processed yet)



Dan
 
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Re: My holiday project - DIY Laser Cutter

hehe Looks like this may be a 'This Weeks Project!!' :P

Nice work! Great progress. What is driving this? I saw a 4 axis+laser driver on ebay for about 88$ (or was it 150$:thinking:)
 
Re: My holiday project - DIY Laser Cutter

Anyone in Aus looking for a CNC/stepper driver, I have listed my current one on eBay:

Stepper Motor Driver CNC 4 Axis Mach3 Laser Mill Cutting Engraving Controller | eBay

It turns out the DSP isn't compatible with drivers under 1/8 microstepping, so I can't use that one anymore :(

Today I reinforced the angle alu side plates by doubling them up. I found that the belt tension was causing them to flex and wrecking my accuracy. There is still a small amount of flex, though only micrometers so I'm not overly worried.

DSCF4857.jpg


Cheers,
Dan
 
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Re: My holiday project - DIY Laser Cutter

Driver board has sold now :) New drivers on the way. Also bought a little temperature guage to monitor the CO2 cooling water, as well as a flow sensor so the DSP can check if the water is flowing or not.

I have started compiling this project on my website: NQLasers

Dan
 
Re: My holiday project - DIY Laser Cutter

Made a few modifications (again). Mounted 2 more bars in and lowered the whole rail system, to allow me some room to run belts over the top.

Also got my new stepper motor drivers and tried them out on the Y axis. Have it pretty well calibrated now, and get basically 0.02mm accuracy/resolution, which is probably 1/8th the size of the laser beam, so it's great.

DSCF4911.jpg


Measuring setup:
DSCF4912.jpg


Dan
 
Re: My holiday project - DIY Laser Cutter

Seriously start putting together a parts list cuz I'm in!!! This is what I Dream about...
 
Re: My holiday project - DIY Laser Cutter

Built the X axis drive today :)

DSCF4928.jpg


DSCF4929.jpg


Just need to mount the idler pulleys, and put spacers ontop so I have something to clamp the belt to. Then it's just a matter of installing all the electronics, finding a cutting bed and constructing a drop tray/funnel.

Dan
 
Re: My holiday project - DIY Laser Cutter

Epic Ultimate DIY :wave:
 
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Re: My holiday project - DIY Laser Cutter

Well, both stages moved today!

Unfortunately the 445nm laser I was going to strap onto it died for some reason, never performed properly right from when I got it, so I had to strap my 445 handheld on, which has little battery life and a very short duty cycle. But, it made it's first drawing!

DSCF4932.jpg


Dan
 
Re: My holiday project - DIY Laser Cutter

Well, found a green module I had laying around and strapped that on. Slow, but it works!

DSCF4933.jpg



DSCF4934.jpg


The smaller text in a box is only 5mm wide :)
 
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Re: My holiday project - DIY Laser Cutter

Well, some good news and some bad news!

Good news is, everything works!

Bad news is, it's not working very well :(

Due to the extreme weight of the X axis, I'm limited to VERY slow speeds, or all my lines end up bumpy from the entire machine wobbling!
Raster works fine, but actual cutting where the X axis has to move considerable distance, then stop and change direction isn't. :(


I have found a local supplier of the rectangular guided rail, and have emailed them for a quote. Not holding my breath as that stuff is usually very expensive, but if I can get it for a reasonable price, it would mean I could get rid of all the hunky steel rods and replace them with an aluminium beam and a single rail - how most other machines do it!

Dan
 
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