Powder coating
- Thread starter Archeryrob
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Where's the beef?
I wonder if he casted them at a little hotter temp, they'd frost just a bit and might give the powder something easier to stick to? Did some casting today and thought about this thread when looking at some frosted ones.
Archeryrob
Undecided on a great many things
And the Crap show continues. The wife left today to visit people and I got the towel out on the kitchen island as its less humid up stairs. took cling wrap and rubbed the sides of the tupperware container down roughly, maybe making static?? Seemed to just get powder in the cling wrap off the sides and all over my fingers. It really likes to adhere to my fingers. Only doing 6 bullets. Spin function like hell, shake up down and spin some more. I am not 45 seconds in and poof, there is blue powder all over the towel. The containers not broken, I check all over, must have pop up under the lid with up and down shaking. Spin and spin hard and I can see powder drifting out of the container. So assuming TW containers aren't air tight with powder residue getting under them. pull the bullets as I got a mess. Take the towel out 4 yards from the house and shake it and wet paper towel everthing.
I took an extra bullet out tot he metal vise and WW lead maybe 11 before and water quenched barely made a slight mark with HB lead for 14 - 15 and F started digging it for 16 - 18 closer like. So naked and lubed, what would you think could be the fastest I could push them without worrying about leading? The powder coat was to not worry about that and I'm close to giving up or driving to Melnic's house.
Elvis ammo does a heating bullets thing. Anyone try that? Heat bullets at 140 for 4 minutes, then dump into the powder container and mix for better adhesion and back in the oven for 20 minutes. Worst case I am melting bullets again like the catastrophe I did with 45LC and made the blob.
Elvis talks a lot so skip to 10 minutes for explanation and 12 for the process.
I took an extra bullet out tot he metal vise and WW lead maybe 11 before and water quenched barely made a slight mark with HB lead for 14 - 15 and F started digging it for 16 - 18 closer like. So naked and lubed, what would you think could be the fastest I could push them without worrying about leading? The powder coat was to not worry about that and I'm close to giving up or driving to Melnic's house.
Elvis ammo does a heating bullets thing. Anyone try that? Heat bullets at 140 for 4 minutes, then dump into the powder container and mix for better adhesion and back in the oven for 20 minutes. Worst case I am melting bullets again like the catastrophe I did with 45LC and made the blob.
Elvis talks a lot so skip to 10 minutes for explanation and 12 for the process.
Archeryrob
Undecided on a great many things
So went out and heated the bullets 4 minutes at 140 and nothing stuck. I could hold them but the felt hot or warm. Heated 4 minutes at 180 to 200 and into the container for a swirl and all the got was a light blue ring to them. They were hot enough that I couldn’t hold them and the powder won’t stick still.
I was shaking the container so vigorously I split the side of it. That’s why I got powder all over the towel in the kitchen
This photo of 4 minutes at 140
I was shaking the container so vigorously I split the side of it. That’s why I got powder all over the towel in the kitchen
This photo of 4 minutes at 140
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Archeryrob
Undecided on a great many things
I have been told that you can't generate static electricity if the humidity is higher than 40%. It has been much higher than that around my house over the last couple of days.
Archeryrob
Undecided on a great many things
I can thinking of just deer fat lubing and seating the gas checks load a few for 2000 FPS and see if I get leading or not. The gas check should prevent right? Maybe I’ll hit cast boolets and ask.
Damn this is frustrating. Getting out the pan lub, I'm going to load some naked GC bullets and play with that.
Damn this is frustrating. Getting out the pan lub, I'm going to load some naked GC bullets and play with that.
85MikeTPI
Ultimate Member
Do you wear the same shoes each time when trying to PC ?
Archeryrob
Undecided on a great many things
Normally, should I try my redneck shoes now that its warmer?
Also, as an electrical type trade guy, I am pretty sure the tuperware container is a sufficient insulator to prevent static electricity from me be transferred to the bullets.
Also, as an electrical type trade guy, I am pretty sure the tuperware container is a sufficient insulator to prevent static electricity from me be transferred to the bullets.
guzma393
Active Member
I push 12 BHN powder coated casts with a gas check at ~2200 fps. It shouldn't lead the bore if the fit is spot on. The gas check acts as a scrubber, pushing out any leading/fouling down the barrel.
This fouling still likes to wind up in the gas system components though. If running it on a semi auto, be sure to clean the gas system after each range session (Atleast this is my case for pushing cast bullets ~2200 fps on an L1A1. I run 300 blk gas checked supers chronoing at ~1600 on my ARs just fine)
Archeryrob
Undecided on a great many things
Guess I need to start a new thread, for relevance now. Short of 115 bullets cooling in deer fat lube as I type this
In my AR's that I shoot cast in, I find the only place I find lead or paint residue is on the bolt tail and in that area of the carrier. It is easy to clean out though if you keep it wet with Mobil 1. I used to shoot about five rounds of .223 afterwards and it cleaned up nice but was a pain to carry an extra upper to the range. I have never seen any buildup in the gas tube.
Archery, I"m putting the finishing touches on my care package to you.
Hundred or so 9mm 125gr bullets. Note, I did not cull any of these and at times ran the mold too hot. No worries they will all shoot fine when coated and sized.
I did not water quench, Just dropped onto fiberglass cloth. Normally I'd let them sit a couple weeks before coating. I"ve water quenched though also and did not notice any problems in coating.
I powder coated some of the batch I molded today already with the blue tub and blue PC I'm sending you. (also green)
I'm sending you 3 of the round /5\ rubbermade tubs I get form Walmart for $3
Plus some green and some red PC to go with the blue.
So, I recommend you take say 20 at a time
Use the blue powder and the tub that has some blue residue
go ahead and place 2x as much as I have in the photo with the uncoated bullets, you can see after I swirled, there was more powder added. Starting with a clean dry tub will take some extra powder to coat the inside of the tub some.
Swirl in a CIRCLE for a few minutes. I swirl fast enough that I feel like I"m using a hoola hoop Don't bother cooking it till you like the coating.
400F for 20 minutes. Don't try any other temp or time for now, just go 400F for 20 minutes!
I happen to use a convection toaster oven and used a temp gauge (thermocouple meter) to verify 400F point and marked it with a sharpie.
the Humidity on my AC thermostat said 46% tonight while doing this.
Coatings of the blue and green were so thick that I had to knock some off before placing in the oven.
John does that by using hardware cloth on top of foil (or say big news paper works). I use surgical clamps like needle nose pliers and pick them up one by one tapping against the side of the bowl to know off excess then place up on the silicone sheet of the tray then put into the oven.
(adding pics with my phone)
Hundred or so 9mm 125gr bullets. Note, I did not cull any of these and at times ran the mold too hot. No worries they will all shoot fine when coated and sized.
I did not water quench, Just dropped onto fiberglass cloth. Normally I'd let them sit a couple weeks before coating. I"ve water quenched though also and did not notice any problems in coating.
I powder coated some of the batch I molded today already with the blue tub and blue PC I'm sending you. (also green)
I'm sending you 3 of the round /5\ rubbermade tubs I get form Walmart for $3
Plus some green and some red PC to go with the blue.
So, I recommend you take say 20 at a time
Use the blue powder and the tub that has some blue residue
go ahead and place 2x as much as I have in the photo with the uncoated bullets, you can see after I swirled, there was more powder added. Starting with a clean dry tub will take some extra powder to coat the inside of the tub some.
Swirl in a CIRCLE for a few minutes. I swirl fast enough that I feel like I"m using a hoola hoop Don't bother cooking it till you like the coating.
400F for 20 minutes. Don't try any other temp or time for now, just go 400F for 20 minutes!
I happen to use a convection toaster oven and used a temp gauge (thermocouple meter) to verify 400F point and marked it with a sharpie.
the Humidity on my AC thermostat said 46% tonight while doing this.
Coatings of the blue and green were so thick that I had to knock some off before placing in the oven.
John does that by using hardware cloth on top of foil (or say big news paper works). I use surgical clamps like needle nose pliers and pick them up one by one tapping against the side of the bowl to know off excess then place up on the silicone sheet of the tray then put into the oven.
(adding pics with my phone)
Archeryrob
Undecided on a great many things
Yeah, I bought that exact same tupperware three pack and broke one I mixed it so hard.
I appreciate all your help. I have the feeling I might be driving my stuff down one weekend to HoCo for you to evaluate and see it not stick and maybe with you having a known process be able to see why it doesn't work. It probably could be solved in an hour with known variables. I just do not have time at the moment with the latest chicken coop build my daughter dropped on me and she can't be left alone to build it. I think she pretty much just keeps me company and snaps on her phone and holds a board here and there when I need a third hand.
A comment on Cast bullets stated you need to have the minimal amount of powder in the tub to generate the static. I've had "plenty" of powder in the container. [EDIT] that was not it. Went to the garage and 20 to 25 and dumped all the powder out but that caked in the bottom and mixed, better but not coated. Add two Tbsp powder maybe mix three minutes and no better. Left (bottom) before right (top) after. I did first mix no BB's and second mix with BB's. No change.
I might be done trying for a while. I got other things that need done.
I appreciate all your help. I have the feeling I might be driving my stuff down one weekend to HoCo for you to evaluate and see it not stick and maybe with you having a known process be able to see why it doesn't work. It probably could be solved in an hour with known variables. I just do not have time at the moment with the latest chicken coop build my daughter dropped on me and she can't be left alone to build it. I think she pretty much just keeps me company and snaps on her phone and holds a board here and there when I need a third hand.
A comment on Cast bullets stated you need to have the minimal amount of powder in the tub to generate the static. I've had "plenty" of powder in the container. [EDIT] that was not it. Went to the garage and 20 to 25 and dumped all the powder out but that caked in the bottom and mixed, better but not coated. Add two Tbsp powder maybe mix three minutes and no better. Left (bottom) before right (top) after. I did first mix no BB's and second mix with BB's. No change.
I might be done trying for a while. I got other things that need done.
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Archeryrob
Undecided on a great many things
Melnic’s package came today. I tried to work outside and quickly quit. Came in threw some of his bullets and a splash of powder and spun them and less than a minute they were covered. So I dumped some of mine in a splash more powder and spin for a minute and a half. And his and mine covered. So dumped them on the tray and baked them.
I’m going to dump out the powder I was using and try again with his and my powder separate.
I must have got it dirty dumping it out over and over after it wouldn’t stick
I’m going to dump out the powder I was using and try again with his and my powder separate.
I must have got it dirty dumping it out over and over after it wouldn’t stick
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Great that it worked out for you!
Archeryrob
Undecided on a great many things
Okay with my new found success. I coated some more, or another pan, with David’s powder and it was good.
I took the bullets I had in the garage and brought them in and used my powder and non stickage. The very same container. Maybe the bullets had some humidity? Maybe I need to measure the powder, a bit much came out. It seems a bit clumpy or self adhering like sugar does. I had to shake the container as it was like a clump in there.
I left the bullets and powder open on the kitchen island to dry until lunch. Maybe use a spoon to measure powder? Maybe humidity is in my powder?
I took the bullets I had in the garage and brought them in and used my powder and non stickage. The very same container. Maybe the bullets had some humidity? Maybe I need to measure the powder, a bit much came out. It seems a bit clumpy or self adhering like sugar does. I had to shake the container as it was like a clump in there.
I left the bullets and powder open on the kitchen island to dry until lunch. Maybe use a spoon to measure powder? Maybe humidity is in my powder?
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guzma393
Active Member
My money is the powder got a bit of moisture in it. At least you got something working for you. I did some powder coating this morning. I tried mixing eastwood lime green with pbtp super wet black and got a gnarly blend. Not sure if I dig it yet, but functional nevertheless.
Sent from my Moto G (5) Plus using Tapatalk
Sent from my Moto G (5) Plus using Tapatalk
Put some desiccant packages in your powder container when you store it. Maybe it is picking up moisture.
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