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Thread: simple Hi-Tek coating

  1. #9421
    Boolit Master Grmps's Avatar
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    Popper, I think you need to use the acetone to completely incorporate all the dry ingredients in the HiTek powder into a solution to allow a thinner coat than ASBBDT and HT powder can give you. when the powder "melts" it leaves too thick a coating for proper curing / adhesion, thus your less than desireable results.
    I've never had a drying problem with HiTek.I use <1mil solution per # of boolits, swirl no more than 15 seconds, I dump on a wire tray, set the tray on a wire rack in front of a fan. They are always dry within 30 min, then I put that tray on top of the oven to warm for 1 bake cycle. ( I live in the NW and it rains a bit here).
    I started out by asking Trevor and Joe a lot of questions, --- I was trying to over think it like a lot of people do.

  2. #9422
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    Quote Originally Posted by Ausglock View Post
    The wash from the swirl container is used to make up a new mix.
    But.... bear in mind. I washout after about 10,000 coated. and use about 200mls of acetone for the wash.
    When I mix, I do 2 litres of coating, 400mls of Catalyst and 2.8litres of Acetone for a 5.1.7 mix. The 200 mls of wash makes up some of the 2,8 litres.
    For powder, I do 800gms of powder to 4 litres of acetone. the wash is part of the 4 litres.
    Thank you, Trevor. The specifics on your wash and how you incorporate it into the next mix confirms just how much I overdid it. I can salvage my mix by diluting it appropriately.

  3. #9423
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    Quote Originally Posted by kevin c View Post
    Thank you, Trevor. The specifics on your wash and how you incorporate it into the next mix confirms just how much I overdid it. I can salvage my mix by diluting it appropriately.
    Kevin c,
    The great thing with this coating is, that you can recover and re-cycle product back into solution if it has not been baked.
    As Trevor said, you can wash all containers and recycle dried residues, then use wash solvent to make a new coating mix.
    Also, if you make mistake, or use too much coating, it is a simple situation to add only a little more solvent , and add more non coated cast. That way you use the coating which is now spread/extended over larger amount of cast.

  4. #9424
    Boolit Master Grmps's Avatar
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    Joe, Do you think If I used 1 mil of straight mek per pound of bullets do you think the residue on the sides of my power tumbler would dissolve and adhere to the bullets in 15 - 20 seconds?

  5. #9425
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    Quote Originally Posted by Grmps View Post
    Joe, Do you think If I used 1 mil of straight mek per pound of bullets do you think the residue on the sides of my power tumbler would dissolve and adhere to the bullets in 15 - 20 seconds?
    Great question.
    My guess is that the coating will dissolve, but more slowly. It may be simply better to put in the uncoated alloy with the MEK, put a lid on it, and shake.
    Leave it for a little while, and shake again. Examine and if its working, simply repeat shake a couple of times more and check again.
    Just how much coating you have in your coating container is really a guess. Adding a little more solvent wont hurt at all, as you can dry it off after you dissolved the coating from your container. Main aim is to use up the coating and coat the projectiles instead of container.

  6. #9426
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    If you don't want to re-use the wash, It makes great weed killer.
    I've dumped probably 20 liters of mixed coating on the weeds over the last few years.
    Hooroo.
    Regards, Trevor.
    Australia

  7. #9427
    Boolit Master Grmps's Avatar
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    I think if the buildup gets bad, (so far it hasn't I also built a powdered coater this is the only way to go to get great consistency and do bigger batches (8 pounds/3.63 KG) per batch) My coater does double duty as a 2 gallon brass polisher, I just change the tilt of the bucket.












  8. #9428
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    Quote Originally Posted by Grmps View Post
    I think if the buildup gets bad, (so far it hasn't I also built a powdered coater this is the only way to go to get great consistency and do bigger batches (8 pounds/3.63 KG) per batch) My coater does double duty as a 2 gallon brass polisher, I just change the tilt of the bucket.












    That is a great set up.
    In the Green bucket, you may have enough to recycle and re-use. What seems to happen, with time, and using the coating system, each load with added coating can become much too much coating, then, each made up coating dose will start to solubilise what is in the bucket. The more dried coating build up you have inside bucket, it is more possible to end up with a much more concentrated brew that is coating your casts.

  9. #9429
    Boolit Master Grmps's Avatar
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    Thanks, Joe, I have a separate bucket for each color.
    I think I'll start going 20% heavier on the MEK, see if that takes off a little coating and slows down the depositing.
    From my understanding, worse case scenario I'll have to go 3 coats to get the color I want and I might get a smoother finish but I can't complain about the finish I get now.

  10. #9430
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    Quote Originally Posted by Grmps View Post
    Thanks, Joe, I have a separate bucket for each color.
    I think I'll start going 20% heavier on the MEK, see if that takes off a little coating and slows down the depositing.
    From my understanding, worse case scenario I'll have to go 3 coats to get the color I want and I might get a smoother finish but I can't complain about the finish I get now.

    Great plan. You are on top of things. I am glad you are having success.
    Keep all updated with your on going results.

  11. #9431
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    The way I deal with coating build up is to put 5 to 6 pounds of bullets in the container with a splash of Acetone then put the lid on and shake and swirl until it looks about right for the first coat. I do this 3 to 4 times to get the bucket clean from heavy build up.

    One problem I have had is when the bucket gets too much build up SWC bullets will pick up a glob of coating from the sides of the bucket when dumping on to the screen, keeping the bucket clean and using 125 ml to 20 g solves this problem.

  12. #9432
    Quote Originally Posted by Grmps View Post
    Thanks, Joe, I have a separate bucket for each color.
    I think I'll start going 20% heavier on the MEK, see if that takes off a little coating and slows down the depositing.
    From my understanding, worse case scenario I'll have to go 3 coats to get the color I want and I might get a smoother finish but I can't complain about the finish I get now.

    Just add about 25% more bullets to your normal batch and squirt a little acetone on the top edge of the thicker coating that is stuck on the bucket. The extra bullets will be high enough to help knock that coating off. I do this about every 4 times that I coat my standard amount of bullets.. this keeps the bucket clean and makes for clean, slick bullets. I then use pretty much the same amount of coating that I use for my normal amount of bullets(but I don't let my bucket get caked up very much so you may have to cut back a little on the amount of coating that you use.)

  13. #9433
    Boolit Man
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    So ioon44 and snscasting, just so I am sure I understand, that splash of acetone and the load of new bullets cleans the bucket and acts as the first coat for those bullets?

    And to be sure I don't have to melt 2500 cast and extra heavily coated boolits, if they all passed the wipe and smash tests, they should be fine to use?

  14. #9434
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    Quote Originally Posted by kevin c View Post
    So ioon44 and snscasting, just so I am sure I understand, that splash of acetone and the load of new bullets cleans the bucket and acts as the first coat for those bullets?

    You have understood it correctly. That is exactly what can be done if you have enough deposits in your coating container.

    And to be sure I don't have to melt 2500 cast and extra heavily coated boolits, if they all passed the wipe and smash tests, they should be fine to use?
    Right again. The aim is to make sure, that first coat is well bonded, and it does not have to look pretty. Second coat makes it pretty, and covers imperfections left with first coat.

    What is now becoming more clear is, that it seems that coating containers having a build up is suggesting too much coating is being added each time, and or, using a strong brew.
    The excess is wiped from alloy and remains on coating container where it dries.
    As coating is very forgiving and is recyclable, the residue inside coating containers is not lost, and can be re-used.

  15. #9435
    Boolit Master Grmps's Avatar
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    Quote Originally Posted by snscasting View Post
    Just add about 25% more bullets to your normal batch and squirt a little acetone on the top edge of the thicker coating that is stuck on the bucket. The extra bullets will be high enough to help knock that coating off. I do this about every 4 times that I coat my standard amount of bullets.. this keeps the bucket clean and makes for clean, slick bullets. I then use pretty much the same amount of coating that I use for my normal amount of bullets(but I don't let my bucket get caked up very much so you may have to cut back a little on the amount of coating that you use.)
    Makes sense SNS, glad to have you aboard.

  16. #9436
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    messing with Black 1035

  17. #9437
    Quote Originally Posted by Michael J. Spangler View Post
    Click image for larger version. 

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    messing with Black 1035
    I like the Black 1035, it's becoming one of my favorites

  18. #9438
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    I'm looking into another oven... There is a house oven that is a convection oven. Anyone try the electric house convection oven for baking. I would like to know if those have enough forced air to properly get the heat to cure the Hi-Tek?

    Thanks for all your support.

  19. #9439
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    Quote Originally Posted by TonyN View Post
    I'm looking into another oven... There is a house oven that is a convection oven. Anyone try the electric house convection oven for baking. I would like to know if those have enough forced air to properly get the heat to cure the Hi-Tek?

    Thanks for all your support.
    Yep.


    This oven has 4 heating elements, but I'm only using 2.
    2 trays of 2.5Kg each baked in 7 minutes.
    Hooroo.
    Regards, Trevor.
    Australia

  20. #9440
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    But you have modified your oven. I'm thinking just a normal convection oven from a store that would be in a house that I can buy. I'm meaning the large house oven in convection style.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
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