Reeder Custom Guns - I’m still inclined toward cool alloy or sprue plate.

WB
I’m still inclined toward cool alloy or sprue plate.
Monday, January 18, 2021, 11:15

But if you’ve been casting that long it makes me think it’s something really odd. There is lots of chatter about zinc contamination but I’ve never known I’ve had it. There could be something momentarily clogging those sprue holes. Alloy contaminated and not fully blended could do it. Hard one to tell without being there with you. Flux some more.

Pour that batch into ingots you mark and set aside. If a Fresh batch of alloy fixes things you might slowly use up the others by dilution.

mould problem - carl hackney, 2021-01-18, 10:00
- thanks guys - carl hackney, 2021-01-19, 06:54
- Carl, if you have tried everything listed - Mark Conner, 2021-01-18, 13:58
  - FWIW LEE sprue plate screw is left hand thread. - WB, 2021-01-18, 20:45
- try fluxing it again and really stirring it - Gary Reeder, 2021-01-18, 11:33
- In the winter, i heat the sprue cutter - steve todd, 2021-01-18, 10:39
- That sounds like a too cold pour. - WB, 2021-01-18, 10:07
  - i tried more tin and hotter temps but made little to no - carl hackney, 2021-01-18, 10:27
    - I’m still inclined toward cool alloy or sprue plate. - WB, 2021-01-18, 11:15
      - Might of gotten some zinc in the mix (nm) - Jk, 2021-01-19, 12:28
  - Also on LEE moulds, they need lubrication. - WB, 2021-01-18, 10:10