Hello casters- tom here, first post. So a newbie. Kindly be patient.
I have 3 Cramer molds, all are gang molds. Acquired many years ago on the bay.
All 3 are heavy strong and despite age appeared to have little actual use.
Understandably. In my limited experience unless that huge chunk of iron is brought up to temp of lead they will not cast decently, no mold will.
A 1-2-3 cavity will warm up from the lead throwing first several back in pot.
But a 3 section 10 round gang for 38WC will not by molding. Nor will the 2 section 6 round 45ACP mold.
FOR ME, just speaking for myself, I set the mold between pours/dumps on the woodburning stove top with draft adjusted so flat top stays 825-875 deg by thermometer/thermocouple.
My specimens have pristine cavities I THINK because previous owners did not use an external heat source to keep mold hot.
But once they are, best I have used.
The samples i have are extremely similiar to Hensley Gibbs to extent I thought they bought them.....definitely precede.
The SAECO 4 cavity 45ACP, are cut from meehanite iron (alloy with minimal/negligible dimensional variation within temp range, no longer available to public I have been told), not aluminum (cost effective/max profit), and are heatable by casting but only if moving fast.
I will attempt to upload pics after looking thru site.
ONCE AGAIN ONLY MY TWO CENTS WORTH, MY EXPERIENCE WITH ME AND MY EQUIPMENT.
But I love my Cramers!!!!! None finer for one seeking self reliance.
Thanx for reading, tom
P.S. I have used over a dozen different lubersizers and FOR ME the SAECO wins.