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Type: Posts; User: flyinwilly

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  1. Replies
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    Re: A Different Machine - Downdraft/water table

    Been a while since I've posted on this thread. Table has been running for 11 years and it's still going great. Business has been way down the last two years due to Covid. Golf courses have not been...
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    Re: Grounding HF plasma torch

    Brad:

    Don't know what you mean by " pictures of your hole setup regarding the cut40".

    The most important things to do to get rid of HF noise are the earth ground and shielded cables.

    On the...
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    Re: Grounding HF plasma torch

    I used a cut40 initially on my table. It requires a lot of extra grounding and planning the build. You MUST have a dedicated earth ground to get rid of HF. In addition, I used shielded cabling with a...
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    Re: A Different Machine - Downdraft/water table

    Occasionally I will get a black film on the inside of the swirl ring. This usually occurs at the end of our season (we are only open for the spring and summer). I suspect its because the filters in...
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    Machine report

    It's been 8 years since I built this table and I am delighted to report that it is still running fine. I've had a few problems along the way but nothing major, just stuff wearing out. I've had to...
  6. Re: Home built machine, hypertherm, mach3, G540 cut quality issues...

    An easy way to see if you are getting interference issues from the cutter is to remove the torch from your holder and put a pen / sharpie in its place. Run a program ( with the 45 turned off) and see...
  7. Re: Home built machine, hypertherm, mach3, G540 cut quality issues...

    If you have a moisture problem, A motoguard filter will not solve it for long. I do a lot of cutting in the summer and the moto guard gets soaked in a few minutes.
    I run 2 large compressors that...
  8. Re: Cnc plasma doing a lead out but not a lead in?...

    assuming you have THC, I would check that your transfer (arc start machine motion) is working correctly. If you have THC, you can check it by turning off the 45, turn on THC in Mach3, and run your G...
  9. Re: Cnc plasma doing a lead out but not a lead in?...

    Make sure your lead in / lead out lengths and type are set correctly in sheetcam. They are set when you select the operation. Also, make sure that you have the room for these when you compile your...
  10. Re: Quality of Everlast with a good torch for CNC?

    Before you decide on a machine, let me relate my experiences with these type of machines. I built my table with a Cut40 plasma cutter. It is a chinese, inverter type machine. The main problem was...
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    Re: Suggestions needed on plasma table

    There are lots of builds documented here on the zone. I went through most of them before I decided to build my own table. In addition, you can get a great deal of good advice from members here. My...
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    Re: Just showing off downdraft system

    Look at my build, "A Different Machine - Downdraft/water table", especially the beginning. It shows how I laid out the water table, slag shield, screen filters, and blower. The one thing I wish I had...
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    Re: Just showing off downdraft system

    I think you are heading for trouble with your current design.

    My table has both a water table and a downdraft system. The top of the water is about 5 inches below the top of the slats. The plasma...
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    Re: CNC Plasma Cutting machine

    Sounds like noise from the plasma unit. What kind of plasma cutter are you using ? If it's one of the HF start (i.e chinese cutters, etc), then you'll have problems if you haven't planned for it.
    ...
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    Re: G540 plasma ?

    The BOB is a breakout board. It takes the pins from the parallel port of the PC and gives you terminals to wire your inputs and outputs to. It is connected to the PC by a DB25 cable. Like the...
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    Re: G540 plasma ?

    It's easy if you have a second parallel port in your PC or if you use a smoothstepper.

    If you have (or can add ) a second port, just buy a second breakout board (like a C10) and this will give you...
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    Re: metal slat material for water table?

    Do a search here for the thread of my build, "A Different Machine - Downdraft/water table". It has a complete description and pictures of my table and how I built the downdraft system (and everything...
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    Re: metal slat material for water table?

    Plasma is very dirty and if you are running in an enclosed area, you need to do everything you can to minimize the dust. You won't believe how much crap is generated. It will get over and into...
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    Re: metal slat material for water table?

    I use 10GA x 2" steel for the slats in my table. They do look a bit crappy after a while but the water table will look worse with the scraps and junk that burns off the sheets as you cut. If you are...
  20. Re: I'd like to build a 4x8 plasma table but every time I look at the options my head

    When I built my table, I studied the build threads here on the zone. Go thru a few and you'll learn what works and what doesn't. I probably changed about half of the ideas I started with when I saw...
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    Re: Cutting a perfect circle

    I use X7 and drew your donut and it came out perfectly.

    I drew 2 circles, converted both to curves, grouped as 1 unit, and then saved (not exported) as a SVG file. Then I imported the SVG into...
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    Re: Cutting a perfect circle

    SVG is easy once you get used to drawing with the same line weight all the time in Corel.

    Try this. Go into corel and draw a circle. Save it out as a DXF file and also as a SVG file. Now process...
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    Re: Cutting a perfect circle

    When corel outputs a DXF file, you get a lot of nodes along the circumference of the circle (at the end of each segment) and it sounds like you have the motion mode set to exact stop so Mach3 will...
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    Re: Cutting a perfect circle

    One problem may be on how you are generating the file that you import into sheetcam.

    I also use CorelDraw to generate my drawings. If I save it as a straight DXF file, then I get circles made up...
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    CNC Electronics - Where are they ??

    Does anybody know what happened to CNC Electronics - The company that bought the old Candcnc designs - LCTHC, etc. ??

    Their website no longer works.

    Willy
  26. Re: Has anyone had success with DIY HF-pilot start?

    I am currently using the G540 and have not had a problem with it when I was using the HF start cutter. I don't believe the 540 is the problem. I think the problem is not using shielded, twisted pair...
  27. Re: Has anyone had success with DIY HF-pilot start?

    I originally built my table with a Cut40, HF contact start torch (chinese made cutter). It caused a lot of problems and took a little planning to eliminate them. Make sure ALL of your electronic...
  28. Re: What should I spend my money on? Cnc plasma

    2 different scenarios.

    If you are using the G540, it has a BOB built in. The problem is that when you hook up the THC (LCTHC in my case), there is only 1 input left for ALL of your other limit and...
  29. Re: What should I spend my money on? Cnc plasma

    If you are willing to piece the system together yourself, $1500 should be plenty. I built my system using a G540 Gecko driver, LCTHC torch height controller, 48V power supply, 12V power supply,...
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    Re: Need help with rough cut

    try reversing your cut direction. Looks like swirl marks.
    If you are using Sheetcam, check the reverse cutting box when you set up the operation.

    Willy
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