Quote:
Originally Posted by conor912
I would also have a thinner and smaller slab so that having a complete graded set wouldn’t be an albatross.
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I hear you there...
I have personally experimented with various molds and a holder really cannot be made smaller than PSA's without getting to the brink of compromising strength. Beckett, SGC and PSA have done a great job designing their holders (kills me to give any credit there, but they earned it). You could, perhaps, take up to 1/16" on each side which would give you almost .13" smaller both ways and still maintain a workable ultrasonic seal and still be able to holder '52-'56 and smaller (using an insert).
Each mold and horn you make requires a pretty hefty investment. Truth is, a workable new holder would look pretty different than what folks are used to and actually be a touch BIGGER. Not huge, but bigger. Each would be a virtual art presentation.