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Type: Posts; User: plasmamatt

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  1. Replies
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    Re: Profiles off center on Cnc plasma

    Hi Bradley, It's an ASRock B75M-GL R2.0. If this one isn't compatible with your computer I'm sure ASRock makes one that is.
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    Re: Profiles off center on Cnc plasma

    Sorry Bradley,

    I forgot all about it. I will make a note to check on this tomorrow.
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    Re: Profiles off center on Cnc plasma

    That is the correct brand but I'm not sure which model I have. It is going to be slightly different for your computer because you are running Windows XP. I'm at home right now and my plasma table...
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    Re: Profiles off center on Cnc plasma

    The replacement motherboard that WinCNC sent me is made by ASRock. I don't recall the exact model. I am using Windows 7 on this particular computer. WinCNC indicated that ASRock motherboards are...
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    Re: Profiles off center on Cnc plasma

    I had a similar problem several years ago after the motherboard on my computer was replaced. As long as the torch was off the pattern was correct. As soon as I fired up the torch the table would...
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    Re: HyperTherm consumables

    I have had issues with the 45 amp fine cut consumables as well. In my case it is almost like the arc gets weak and it can intermittently struggle to cut all the way through the steel. It's not all...
  7. Re: cnc plasma cutting issues. Please help!

    I had something similar happen several years ago after I had to change the mother board on my computer. It would have an intermittent stutter in either the X or Y direction which would lead to out...
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    Re: A Different Machine - Downdraft/water table

    Thanks for the info. I didn't know if you were doing some type of special cleaning that I didn't know about. I typically change the swirl ring after so much use. It doesn't prevent the stuck...
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    Re: A Different Machine - Downdraft/water table

    Hi Flyinwilly,

    You mention that you still have a few "stuck consumables" and that doing a complete cleaning of the torch could resolve this. What type of cleaning are you doing? I too have stuck...
  10. Re: Home built machine, hypertherm, mach3, G540 cut quality issues...

    The picture of your consumables is indicating that you have moisture or oil contamination issues. My consumables use to look identical to this and I tried quite a few different types of filters...
  11. Re: Trouble calculating deflection of a 80x80mm T-Slot

    100% agree. I said it wrong and didn't catch it until I hit submit. What I meant to say is that in an FEA analysis it will show that the higher grade of aluminum can handle a higher load because of...
  12. Re: Trouble calculating deflection of a 80x80mm T-Slot

    I would have to agree with Triumph406 on this one. The engineering formulas are tried and true. The deflection formula only takes cross section and Young's Modulus into consideration. Knowing that...
  13. Re: Few questions about temperature expansion.

    I think you are over complicating it. Unless you are going to see some major swings in the ambient temperature where your machine is kept I don't think you need to worry about this. The machine...
  14. Re: Trouble calculating deflection of a 80x80mm T-Slot

    There are a couple mistakes you are making in your calculations. If we just consider the cross section to be an 80mm square section the moment of inertia would be 3,413,333 mm^4. This is a...
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    Re: Finite Element Analysis

    In general FEA is a tool (computer software) that helps to determine stresses for different shapes/geometries. It is particularly nice on complex shapes. It will quickly tell you where the high...
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    Re: Mechanical Design & Engineering

    If you are good at math and physics and have a mechanical mind it really isn't difficult. It is a tremendous amount of work though.

    I think one of the more important aspects if you are going to...
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    Re: Need help with thrust bearing design

    I wanted to add to my comment above to better support what I was saying. The only time you could consider using the full surface area of the hemisphere is if both bodies can be considered ridged and...
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    Re: Need help with thrust bearing design

    I would agree with kawazuki. The surface area bearing the load is going to be much less than the surface area of a hemisphere. The majority of the load will be carried near the bottom of the...
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    Re: Deburring and edge rounding

    We manufacture 1000's of parts using plasma cutting and we have run into the same question about deburring. For just pure deburring we use either a tumbling process (part on part contact) or a wire...
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    Re: Need help buying a CNC Plasma machine

    I would highly recommend the Shop Sabre brand. I can't say enough good things about them. We purchased our table back in 2010 and we use ours for production cutting. It is a very well built unit...
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    Re: Powermax 85 Fine Cut Issue

    I've experienced the exact same issues on 16GA as well. Just as Jim Colt mentioned it is only when the consumables are new. I too found that raising the cutting height up a bit drastically reduces...
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    Re: Need help with rough cut

    Can you feel any vibration in your gantry? Also check to see if your torch is moving or vibrating too.
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    Re: Horsepower change with pulley ratio

    As it was mentioned many times already, mactec54 you are confusing HP with torque. The HP can't change. One of my engineering professors use to always say that "there are no free lunches". You...
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    Re: Choosing plasma cutter

    I would highly recommend the Hypertherm brand. I have owned both the Thermal Dynamics A80 and Hypertherm Powermax 85. Absolutely no comparison between the two. I also do a lot of cutting on 1/4"...
  25. Re: Best turnkey 4'x8' cnc plasma table under 20k?

    I'll second the Shopsabre brand. We bought the 4896 model (4x8) back in 2010. I looked at many different brands and really didn't like what I was seeing until I came across the Shopsabre. It is a...
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