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Recent content by Chally72

  1. Chally72

    Cutting solid Zinc sheet?

    A customer has asked if I can cut solid zinc sheet, between 0.030-0.060" thick. I have done zinc coated pieces before, but...can I even cut this on my CO2 laser? What problems am I going to run into?
  2. Chally72

    Looking for Opinions on New Laser, Possibly Fiber

    Thank you both for your input!
  3. Chally72

    Looking for Opinions on New Laser, Possibly Fiber

    I'm starting to hunt around for new laser options. I have a 90's Prima Platino 4KW that is slowly collecting more jumper wires and band-aids than a 40 year old Jaguar. We cut mainly stainless and inconel, up to 0.250". We occasionally cut thicker material- up to 0.625", but not often, and I'm...
  4. Chally72

    Wobble in cut

    Slowing down the cut speed as Footstrap suggested would give you an indication as to where the waviness is coming from.
  5. Chally72

    Problem cutting 5 mm stainless on Amada FO-3015

    Some parameters off of a Prima Platino: Feed rate: 77ipm Power: 2700 Freq.: 1000 Duty: 100 Nozzle gap: 0.047 Lens: 5" Running at 65ipm, even with a 7.5" lens, you shouldn't have to go anywhere near 4000W.....
  6. Chally72

    Amada FO3015 cutting .12 aluminum

    Isn't 0.0118" nozzle standoff extremely small? Also gives the machine less time to react to changes in sheet height.
  7. Chally72

    Nozzle Size vs Gas Pressure vs Standoff etc.

    Jean, those sound like incredibly high pressures. For me, the benefit of lower pressures, in addition to keeping nitrogen consumption low, is to reduce the tip-ups of adjacent pieces caused by the nitrogen, especially on thin pieces. I've lowered my gas pressure on thin stainless and varied...
  8. Chally72

    Nozzle Size vs Gas Pressure vs Standoff etc.

    Yikes! Sounds like they need a day or two with a proper tech. More knowledgeable individuals than me will soon step in, but...when cutting Stainless, I use a 0.080" single nozzle up to 0.140" material, and an 0.100" beyond that. Gas pressure varies from 8-13 bar as thickness goes up. I don't...
  9. Chally72

    Laser cutting leaving a burr on only one side of a square test cut

    Having chased the mirror alignment issue for several days after a tech botched it, I can attest to this being a cause of burrs on one or two sides of a part... On my Prima Platino, I always center the beam at the same head height and focus position as the cut. It helps immensely.
  10. Chally72

    Rumbling

    We use several of them, mainly for Inconel alloys. As Shaun says, they will not remove anything more than light burrs, so parts with heavy dross must be hit with a belt sander before being tossed in. Cycle times will vary greatly based on piece size, material and media, but our cycles for...
  11. Chally72

    Laser cutting leaving a burr on only one side of a square test cut

    LASERNINJA, wouldn't this be a result of the beam alignment farther up the chain rather than the lens itself? The first few mirrors in line past the output coupler aren't perfect, and the beam is angled as it comes into the lens, so centering the beam at one focal means it is off at another...
  12. Chally72

    Is it possible in st6?...series of questions

    #1: I am not sure WHAT exactly you want to make bigger, but there are many different layout options in ST6. Right-click on the ribbon, and go to Themes, and experiment with different layouts available there. #2: As far as I know, locking axial rotation is always a second step. #4: I assume you...
  13. Chally72

    Prima Platino Output Coupler Issues

    Hi Chris, Unfortunately, the last one went out the door with the tech. This particular instance happened to be some sort of contamination with our UHP Nitrogen...I swapped tanks out and the laser is OK again, more or less. I am gradually having to add power into the parameters though, which...
  14. Chally72

    Prima Platino Output Coupler Issues

    Like clockwork, every 2 years or so the laser starts dropping cuts, we get a tech in, and the output coupler ends up being replaced. This is a late 90's Platino 3500 with very low beam-on hours (2300 total). I just shut it down again today because of increasing cut drops and suspect the same...
  15. Chally72

    Question on custom suspension

    Hi Norm- I started with a desired static ride height, track width, and rim size and offset, put the known spindle and ball joint geometry in, and then designed the A-arms and mount points from there. I had to actually modify the frame to get my 2.25" bump clearance through the steering sweep...
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