If you run 2 magnets and a lifting bar between them like these it will be easy to position.
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https://www.homedepot.com/p/Milwaukee-3-in-Carbon-Steel-Knot-Wire-Cup-Brush-48-52-5040/100053125
I use this one sometimes, depends on the cut. If there are a lot of fine thin easy to bend pieces I stick with the flap disc, if it’s pretty beefy I’ll use the knotted wire wheel. Even after wire wheel I still run the flap afterwards to smooth it out.
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Finally getting around to make my own stuff, been extremely busy making signs and such.
Now I have a dedicated place to design and process some ideas.
Now to get this laser all assembled and making money…
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Great Job!
Can we see some details on those table feet? looks interesting
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pretty simple design really. Used 11 ga on everything, have 2 square gusset supports on each assembly…stood off 4". have both top and bottom plates for leveling feet and for attaching to top.
went pretty overkill, but used 1" threaded rod, nuts and washers to hold everything at the 4" dimension while I tacked and welded it all together.
Went for a “used” industrial look, so I painted flat black, scuffed up some areas and then matte clear.
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First ever attempt at airbrush.
Cut the hat and cat separately.
JB Weld after painting.
Not great but good enough to set out front.
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Super bit of yard (or porch) art!
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Got to cut some 3/8 mild steel with my 50 amp everlast. These are wheel adapters to bold a case international wheel to a John Deere tractor. i had to cut slower than i expected though. 48 amps, 28ipm, 72psi. surface of the cut edge looks laser cut. i am totally impressed. Custom tractor wheel adapters!! | Custom made tractor wheel adapters. Not just another pretty art piece! These are for our friend Justin Glass! Custom cut 3/8 steel to bolt case tractor... | By DnK Fabrication | Facebook
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Cuts looks awesome.
Are those parts perfectly round?
If so, what dia and how well did turn out in terms of roundness?
I ask because I cut some .093 thk Stainless into a 31" diameter sign. It was off by 1/16". I am wondering if that is in the realm of acceptable for the pro table.
@Zen on the 3/8 thick steel cutting an 18inch circle I am within a 16th on roundness. As far as cut dimensions compared to programmed dimensions I over estimated my programmed kerf width, so my parts came out very slightly oversized. And my holes came out a touch smaller than programmed. My true kerf width on that cut was .075 with a 50 amp nozzle. I had slightly oversized the holes to compensate for the “angled” cut that happens on thicker metal so my holes still were within the size limits I had. When cutting 16 gauge, my 24 inch diameter circles which is closer in proximity to what your cutting…my circles are within 1/32 of roundness. I think it’s critical to ensure your kerf is programmed properly because if I understand it properly as the plasma cuts a circle it switches partway through which side it compensates on. So whatever dimension your kerf is wrong will be doubled on your final part showing up as an elliptical cut.
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@DnKFab thanks for the info.
Yeah it didn’t matter much because you can’t see 1/32 off on a 31 inch piece of artwork as opposed to if it were a dimension I needed to hold to some tolerance.
I didn’t think to measure until after I delivered the part. So I don’t know the kerf width. Checking the skeleton the X is 1/32 larger than Y.
I’ll have to pay more attention to the results as I go.
So what was it that made you kerf width change? Slower IPM? or does it change because of low IPM travel?
@knick that was the first project I did with 3/8. I didn’t measure the kerf. I just estimated it based on the nozzle orifice size for the 50 amp nozzle and ran with it. Generally I use a 30 amp nozzle. Usually my estimations are on the narrow side but this time it was opposite. The funny part was I made several test cuts to dial in power and speed. I could have measured it. I just didn’t.
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So kerf width changes with a larger nozzle size?
Yes. The larger the hole in the nozzle, the larger the plasma stream that goes through it.
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As the consumables wear, the kerf will increase as well.
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Does not effect me with the RW45, but good to know.
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How much larger do you think it gets before cut quality suffers? Few thousandths and than you replace because cut quality suffers?
Every cutter will vary, cuts will get ugly then misfires.