Powder coating

The #1 community for Gun Owners of the Northeast

Member Benefits:

  • No ad networks!
  • Discuss all aspects of firearm ownership
  • Discuss anti-gun legislation
  • Buy, sell, and trade in the classified section
  • Chat with Local gun shops, ranges, trainers & other businesses
  • Discover free outdoor shooting areas
  • View up to date on firearm-related events
  • Share photos & video with other members
  • ...and so much more!
  • Melnic

    Ultimate Member
    MDS Supporter
    Dec 27, 2012
    15,364
    HoCo
    what is the powder part #/color or link of the powder you used?
    My loft got up to 55% humidity during the summer sometimes and I never had problems with powderbythepound powder I used.
    As a matter of fact, that stuff goes on pretty thick I think unless you shake like John says.
    I coated some pure lead the other night with PbtP and some Amazon stuff and the Amazon stuff was on the light side but filled out pretty good.
    I have found that the PbtP seems to soak up most of the powder I put in my container. I aim to only put enough in where the bullets get covered and after shake and swirl, there is little powder in the bottom of the container.

    When you coat in the container, is there excess powder at the bottom? If not, you may want to put more powder in for the first few batches.
    Now, I do just 400/20min warming up the oven first. I don't follow Elvis Ammo and what he's doing so your on your own there.
     

    Archeryrob

    Undecided on a great many things
    Mar 7, 2013
    3,101
    Washington Co. - Fairplay
    Third coat and maybe possible as usable but let’s says I’m not drinking thrilled about it
     

    Attachments

    • 1307F925-05F5-46D3-A11F-07BA8D9F550F.jpg
      1307F925-05F5-46D3-A11F-07BA8D9F550F.jpg
      127 KB · Views: 121
    • 70263085-C07B-4B64-B9FD-1399BC8ADF86.jpg
      70263085-C07B-4B64-B9FD-1399BC8ADF86.jpg
      81.6 KB · Views: 117

    Archeryrob

    Undecided on a great many things
    Mar 7, 2013
    3,101
    Washington Co. - Fairplay
    It is in the garage but in an reading 37% outside right now and it’s a detached I heated finished building

    15 minutes about 375

    It’s sky blue from powder by the pound 5012 or close can’t remember the number right now

    Man, I’m really looking at pan lubing as easy

    EDIT RAL 5015 Sky Blue is the powder
     

    Melnic

    Ultimate Member
    MDS Supporter
    Dec 27, 2012
    15,364
    HoCo
    Just for the sake of the thread
    Here are the powders I have used. All but the right are from Powder by the Pound. Right one is from Amazon
    I forgot to put out sample of the rose gold but its rather translucent and shows the gray of the lead through it a bit.

    9e6cfcca1d7479757c921ce2e5ecd7f5.jpg



    I do 400F / 20 minutes. I've once accidentally cooked them hotter at 450F/20 mins and found little difference with the blue. I pound tested that batch and it was fine.

    300blk top left is mine. Top right is John's

    33768cacabf2a61000679c161634e19a.jpg


    30 cal and 2 45-70 bullets on the right (all 3 below) are pure soft lead. I can see the coating did not smoothen out as well as the hard lead.

    987120e02b2b3270ddd7e88644edfc2e.jpg


    Ones on the left (all 5 below) are hard lead

    dfaf9d123abf91eae38094aa0bb21aac.jpg



    Sent from my iPhone using Tapatalk
     

    Archeryrob

    Undecided on a great many things
    Mar 7, 2013
    3,101
    Washington Co. - Fairplay
    I’m using that left one and I got Chinese red or something I haven’t opened yet

    I think in need assistance, or tutoring, I’ll buy beer, pizza, cook deer steaks or roasts. The wife might be flying out so I got lots of free time
     
    Last edited:

    Melnic

    Ultimate Member
    MDS Supporter
    Dec 27, 2012
    15,364
    HoCo
    I’m using that left one and I got Chinese red or something I haven’t opened yet

    I think in need assistance, or tutoring, I’ll buy beer, pizza, cook deer steaks or roasts. The wife might be flying out so I got lots of free time

    If you do a batch next time, just cook 1 or two. mix them up and then just put a couple in at a time. go for 400/20 minutes just to see.

    Did you ever calibrate the overn?

    BTW, My oven is pretty big and it has a convection feature that I use.
     

    Archeryrob

    Undecided on a great many things
    Mar 7, 2013
    3,101
    Washington Co. - Fairplay
    Did you ever calibrate the overn?

    I ran it and the dial just over 250 reads around 375. So I am good there. Once the powder is on the bullets I am good. the problem is, ... The powder is not sticking to the bullets and the container didn't change anything. I have no clue what is wrong. ;) three coats and mine don't even closely look like yours.

    I'll try again, I am just VERY frustrated! I'll put the weather station out there and check humidity.
     
    Last edited:

    Archeryrob

    Undecided on a great many things
    Mar 7, 2013
    3,101
    Washington Co. - Fairplay
    Ok, so I had the weather station running today and had humidity at 36% inside and 38% outside. Put the outside sensor in the garage and came back to check it and it said 60%. I didn't want to do his in the house. I guess I need to drop cloth in the basement and on the work bench and have a old cookie sheet to carry the coated bullets on the wire screen pan to the oven in the garage for backing as a trial now.

    The garage is built into the hill so my back wall is 4' stud and 4' block. Helps is stay warmer, but I am assuming also moister. <sigh>
     

    Melnic

    Ultimate Member
    MDS Supporter
    Dec 27, 2012
    15,364
    HoCo
    If you have the time to experiment, I still think your not running them hot enough for the coating to smoothen out.
    run a couple bullets at a time, run 20 minutes bumping the temp up 25 degrees at a time.
    When they darken, its too hot.

    Make sure you are letting the oven warm up before you put them in.

    I combine swirling in a circle (think hoola hoop) and flopping up and down.

    I ran some un gas checked 30 cal last night and took pics
    Dumped in,
    sprinkled powder
    shake and swirl.

    As mentioned before, I go through the tedius steps of spacing mine out for rifle or standing up for pistol. I use a silicone/copper sheet which I don't think is a good idea for an oven without convection and pre heating till warmed up which is what I use/do.

    Eventually, that tupperware gets a coating of powder. I'll dump any excess back into the container then wipe with a paper towel to clean it back off so the static builds up better during the swirlling. I have one color in a square tupper ware container. I don't know for sure, but it does seem to take more agitating to get a good coat vs the round one.

    4efe9a8b1f093c42b6a87bb9c332fc8a.jpg

    176e7730e2d9a2d12dcded621821cf88.jpg

    c5b35fa52a7f011022a4032948726713.jpg

    ebbddc0f8149cc92b1dcb185967d993d.jpg

    7a07451e1bb82f1631ae3a5c43cef3c6.jpg

    eb5496b02ae680fe206732bad8cb37b2.jpg
     

    John from MD

    American Patriot
    MDS Supporter
    May 12, 2005
    22,932
    Socialist State of Maryland
    Ok, so I had the weather station running today and had humidity at 36% inside and 38% outside. Put the outside sensor in the garage and came back to check it and it said 60%. I didn't want to do his in the house. I guess I need to drop cloth in the basement and on the work bench and have a old cookie sheet to carry the coated bullets on the wire screen pan to the oven in the garage for backing as a trial now.

    The garage is built into the hill so my back wall is 4' stud and 4' block. Helps is stay warmer, but I am assuming also moister. <sigh>

    I apply the powder in my basement as I have two humidifiers down there. I just use a canvas drop cloth to keep the place clean. I made several trays so I can coat a bunch of bullets and then bring them up to the garage two at a time for baking. In the winter, I leave the garage door open and in the summer I move the oven outside.
     

    Archeryrob

    Undecided on a great many things
    Mar 7, 2013
    3,101
    Washington Co. - Fairplay
    I've done the Hulu hoop spin and no matter how long I continue they don;t cover all the way. I'll have to measure the basement humidity and adjust. I know when I get the wood stove fired this weekend it will get dry down there for sure.

    It is at least promising to know possibly what the issue is and I'm not as stupid as my bullets look. ;)
     

    guzma393

    Active Member
    Jan 15, 2020
    741
    Severn, MD
    I've done the Hulu hoop spin and no matter how long I continue they don;t cover all the way. I'll have to measure the basement humidity and adjust. I know when I get the wood stove fired this weekend it will get dry down there for sure.

    It is at least promising to know possibly what the issue is and I'm not as stupid as my bullets look. ;)

    This may sound counter-productive if you are trying to be successful with the shaken'bake method, but have you tried tumbling the powder coat on using a dry tumbler or a wet tumbler?

    For the wet tumbler method, I use an empty #1 powder jug that fits inside the frankford arsenal drum. I put 1/3 full of bullets in the jug along with the powder coat. I then seal the jug with the lid and put it in the drum and tumble it for 20 minutes. This is how I was able to get HF powder to stick, specifically a blend of 30% HF black and 70% HF white. Definitely overkill, but it was progress back in the days I had trouble pc sticking until i bought the good stuff.
     

    Archeryrob

    Undecided on a great many things
    Mar 7, 2013
    3,101
    Washington Co. - Fairplay
    How low does the humidity have to get? I put the weather station downstairs and got 49% at my bench but the wood stove has been off. I just started it back up and I’ll see if it lowers it before trying again.

    Guzma, I have the harbor freight double for tumbling brass and made a one piece tube from 4” pvc. I could just buy two more plugs and caps and make one for blue and one red. I already have 4’ of pipe left. I got to go to Lowe’s anyway to get a 2x4 to set my garden seedings in the window and hang the grow light
     

    guzma393

    Active Member
    Jan 15, 2020
    741
    Severn, MD
    How low does the humidity have to get? I put the weather station downstairs and got 49% at my bench but the wood stove has been off. I just started it back up and I’ll see if it lowers it before trying again.

    Guzma, I have the harbor freight double for tumbling brass and made a one piece tube from 4” pvc. I could just buy two more plugs and caps and make one for blue and one red. I already have 4’ of pipe left. I got to go to Lowe’s anyway to get a 2x4 to set my garden seedings in the window and hang the grow light

    https://www.youtube.com/watch?v=8uF-06Haq04

    Worked for this guy. He goes over the type of PVC to get; don't get the interior foam core stuff and it should be electrically conductive. Good luck!
     

    guzma393

    Active Member
    Jan 15, 2020
    741
    Severn, MD
    Found this interesting video of someone using spray silicone to make powder coat stick. I never had to do this method, but might be of use:

    https://www.youtube.com/watch?v=Tf5C7x27Gmg

    OP comments leads with how is works: "The silicone is serving as a tacky adhesion layer. It may also be serving as a binder, depending on the chemical structure of the powder used in coating. I have used silicone grease straight as bullet lube before, and it works fine (no damage to bores). My only concern would be the baking step oxidizing the silicone oil up to silica, which is an abrasive. As a general guideline, silicone oils start to degrade (smoke temp) above about 250C (480F), and don't fully oxidize until much higher, e.g. above 400C (750F). As I understand it, most powder coating involves baking at 350F (177C) to maybe 400F (204C), which is well within the stable range of most silicone oils. No, I would not expect it to evaporate during baking. I would expect it to get tied up in the polymer coating."
     

    Archeryrob

    Undecided on a great many things
    Mar 7, 2013
    3,101
    Washington Co. - Fairplay
    https://www.youtube.com/watch?v=8uF-06Haq04

    Worked for this guy. He goes over the type of PVC to get; don't get the interior foam core stuff and it should be electrically conductive. Good luck!

    I might try this, not sure if I have the right pipe or not, I'll have to check. I might also glue in 3/4" pvc coupling cut in half like I did in the brass tumblers to stir better.
     

    Melnic

    Ultimate Member
    MDS Supporter
    Dec 27, 2012
    15,364
    HoCo
    From last night
    Took a pick 5 minutes out and 20 mins
    You can see how it is clumpy at 5 and flows and smooths out by 20. Not sure the point where it peaks but may be just 10 mins
    82a579e7487b7e0920cdeafb808e388a.jpg

    dd655ca3e63ce44760d7b39fc28defeb.jpg



    Sent from my iPhone using Tapatalk
     

    Archeryrob

    Undecided on a great many things
    Mar 7, 2013
    3,101
    Washington Co. - Fairplay
    Okay I got #5 container, air soft bbs the humidity is 38% why can’t this stick? the air soft bb's didn't make it stick and just clogged the hardware cloth
     

    Attachments

    • 79CFD8A3-5F46-4CAD-A4FE-6EE0BB875566.jpg
      79CFD8A3-5F46-4CAD-A4FE-6EE0BB875566.jpg
      109.3 KB · Views: 109
    • E1CE72B8-3156-4510-8388-FC9CBF66EF12.jpg
      E1CE72B8-3156-4510-8388-FC9CBF66EF12.jpg
      60.3 KB · Views: 96

    Users who are viewing this thread

    Latest posts

    Forum statistics

    Threads
    275,523
    Messages
    7,285,020
    Members
    33,473
    Latest member
    Sarca

    Latest threads

    Top Bottom