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Thread: Sticking mold

  1. #1

    Sticking mold

    I noticed this weekend after getting my molds good and warm and casting I started having trouble opening the molds, they didnít wanna open like they usually do boolits didnít have any more trouble dropping out of the mold once I opened it up but it was definitely sticking closed. I was using a pair of Lee 356-125 2R molds and water dropping the boolits so maybe splashed a little onto the mold making a cold spot? Not sure what I did to make it do that so if someone with some experience could fill me in let me know. thanks!

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  2. #2
    Boolit Grand Master

    Beagle333's Avatar
    Join Date
    Mar 2012
    Back in the woods a piece, just outside Auburn, AL.
    The only time I have seen them stick closed is when the alignment pins get dirty. I would assume that you do lube your pins and sprue plate screw before starting, and after a while that sticky, burned lube builds up on the pins and in the alignment holes. Check and make sure those areas are clean.
    KE4GWE - - - - - - Colt 1860, it just feels right.

  3. #3
    Boolit Buddy
    Join Date
    Nov 2012
    See if the locking pins have moved or if they have burrs around them. Does it help to smack the handle before opening? If so my guess is that they have moved. It's not uncommon for them to slide forward and then the mould gets hard to open/close because it's pinching in the locking pins/holes.

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  4. #4
    Boolit Master Reddirt62's Avatar
    Join Date
    Mar 2017
    Oklahoma City
    I put a touch of beeswax on my pins after the mold is warm, stops the sticking.

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  5. #5
    Didnít have to smack it but it took 2 hands a few times usually it just falls open Iíll check the alignment pins and give em a good cleaning and lube

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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