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Thread: DIY 100 pound pot/master caster

  1. #41
    Boolit Master jmorris's Avatar
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    I machined the slot in the mold carriers I built and while it was in the vise plunged a pocket in the bottom of them where the spring locates. The vertical off the shaft has to have clearance for the spring though.

    The drawing is of how I would make them, if I had a "do over" so there is a bearing opposite the mold that rides on the rails. I would use a low profile needle bearing like the blade guide on the left though.
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  2. #42
    Boolit Master
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    Jmorris - how do you think the roller bearings would handle the heat? I'd have guessed they would get a bit too hot and have the grease fry out of them. Nice low friction idea though. I have to keep putting oil on mine nice and smooth.

  3. #43
    Boolit Master jmorris's Avatar
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    Jmorris - how do you think the roller bearings would handle the heat?
    I don't really know in that environment. I do know that I have bearings that have held up to a lot more load and heat.

    like the caged needle bearings between wrist pins and a piston or bearings in a turbo for examples.



    Not sure if it really needs to be a bearing to get benefit, a bronze bushing as a roller would be better than steel on steel rubbing. Won't have the oil (coolant/lube) flow like the above examples but also 1000 degrees F cooler and 25,000 or so RPM less rotation.

    It's really not going to be that much more harsh of an environment that the pivot of the arms.
    Last edited by jmorris; Today at 01:15 AM.

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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