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Thread: New MP mold

  1. #1
    Boolit Mold
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    New MP mold

    My new MP mold came in today, any advice on cleaning and lubing appreciated being this is my first mold. It came with some mold/sprue plate lube.

  2. #2
    Boolit Master
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    Brass or aluminum?
    Ed <><

  3. #3
    Boolit Mold
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    Aluminum

  4. #4
    Boolit Mold
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    Tried to upload pics but it wouldn't let me. Haven't quite figured that out yet

  5. #5
    Boolit Master Wheelguns 1961's Avatar
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    All I do is give it a good scrub with a toothbrush and dawn. Then I heat cycle it 3-4 times, making sure to let it completely cool between cycles. This is my process for brass or aluminum. Put a tiny bit of lube on the male side of the alignment pins when it is hot.
    Due to the price of primers, warning shots will no longer be given!

  6. #6
    Boolit Mold
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    Heat cycle at about 400 degrees? And I assume that you leave the handles off if you use a toaster oven, correct?

  7. #7
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    Minerat's Avatar
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    Quote Originally Posted by Wheelguns 1961 View Post
    Put a tiny bit of lube on the male side of the alignment pins when it is hot.
    ....and the pin retainer bars if it is a HP and it takes about 3 pours to get the pins up to temp after warming mould on a hot plate
    Steve,

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  8. #8
    Boolit Master
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    the last ones I got from miha were much harder to clean then previous ones I've gotten from him. I guess he may have changed lubricants in his machine.
    I first cleaned it with carb cleaner but then had to scrub with an old tee shirt and alcohol to get all the cutting lube completely off of it.

  9. #9
    Boolit Master Wheelguns 1961's Avatar
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    Quote Originally Posted by Kyregular View Post
    Heat cycle at about 400 degrees? And I assume that you leave the handles off if you use a toaster oven, correct?
    I do mine on a cheap walmart hot plate with the handles on. I set it on medium for aluminum molds, and medium high for brass.
    Due to the price of primers, warning shots will no longer be given!

  10. #10
    Boolit Mold
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    Yeah that would be easier. How long do you leave it on there?

  11. #11
    Boolit Master Wheelguns 1961's Avatar
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    I leave it on there for about 20 minutes, then let cool till room temp. I do the same when casting. I turn the pot and the hotplate on at the same time. When the lead is melted the mold is ready. You will need to experiment with the setting on the hotplate. If the sprue takes forever to cool, turn it down a little next time. I also keep a rag with a little bit of 2 stroke oil soaked into it. When I fill the mold the first time, I cut the sprue when it changes color, and before I dump the bullets, I wipe the top of the mold and the top and bottom of the sprue plate with this rag. Go to mp-molds website and check out their tips and tricks. There is some very good information there.
    Due to the price of primers, warning shots will no longer be given!

  12. #12
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    cwlongshot's Avatar
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    Quote Originally Posted by Wheelguns 1961 View Post
    All I do is give it a good scrub with a toothbrush and dawn. Then I heat cycle it 3-4 times, making sure to let it completely cool between cycles. This is my process for brass or aluminum. Put a tiny bit of lube on the male side of the alignment pins when it is hot.
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  13. #13
    Boolit Mold
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    Subscribed to your channel longshot

  14. #14
    Boolit Master
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    The last brass one I got, the supplied lube caused some blue corrosion around the alignment pins. The two-stroke oil is a good tip. Also whatever steel tool you use to stir your pot while fluxing, and for skimming, needs to be on the hot plate if it's humid, or the tinsel fairies will be visiting.
    Ed <><

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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
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check