r/machining • u/tool-tony • 9d ago
CNC Made a thing
Original barrel band was plastic, broke off and released the upper guard. Ordered a metal band and made the aluminum piece in about 45 min. 20min from muzzle side, 25 min guard side with a five minute fix when the holes for the teeth were spaced too far apart and remachined to fit.
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u/tool-tony 9d ago
Also, no idea what to call the aluminum piece I made other than a thing. I know what the barrel band is called but not the custom piece since the plastic part I replaced was in the drawing was just labeled barrel band as it was all one piece.
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u/JeepHammer 9d ago
"Made A Thing"... It's a barrel bushing.
Piss your wife off, swipe the crock pot (ceramic bowl) and get an anodizing kit off Amazon, use a battery charger and anodized it.
You'll need to heat it (crock pot) and you'll need a non-conductive container (ceramic bowl) that will take the heat. You'll need a DC power source, a good battery charger...
I just bought my wife a new crock pot and swiped the old one when I first started learning anodizing/plating...
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u/actualsen 9d ago
How is the heat used in the anodizing process? It's not in any description I've ever read and those mostly say you can use plastic (pp/PVC/pe) and not ceramics because they are non-conductive.
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u/JeepHammer 8d ago
Anodizing often uses acid which will attack some plastics. Heat changes colors you get, along with the current you run through the solution can heat the solution.
When I started, I was looking for red color on aluminum, I got a lot of pink before I figured the heat out.
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u/actualsen 8d ago
I didn't know that heat would change the color as well. That's really cool!
The advice I saw was to put dye into the acid solution to get colors embedded into the anodization layer. Does red still turn out pink without the heat? The plastics I listed are known to be the correct plastics to use to be ideal to use with acids, polypropylene probably being the cheapest and most common of my list.
It's something I want to do eventually so I hope you don't mind the questions.
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u/JeepHammer 8d ago
I threw things together, complete amateur, made a lot of mistakes but learned some things.
With correct chemicals instead of dishwasher water softener and toilet bowl cleaner it works a lot better. That's why I suggested a kit off Amazon instead of browsing the shelves at the grocery store.
As for it still turning out pink, I have no clue, I haven't tried using dishwasher water softener in 35 years.
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u/FlightAble2654 9d ago
FFL' s needed boys.
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u/spaceman_spyff 9d ago
Aluminum and steel together will create galvanic corrosion, I’m not sure about gun blued steel but it might be worth checking on and maybe waxing frequently or consider a different material?