BeeMan
09-17-2009, 12:19 AM
Bringing this back up for the newer members, and us 'not so new' who may not have tried it.
Tonight I finally got around to speed cooling the sprue as Bruce describes here:
http://www.castboolits.gunloads.com/showthread.php?t=57105
I tried it foremost to eliminate variation, based on Bruce's comments about temperature consistency and low extreme spreads for weight and dimensions. The discussion about efficient layout and maximizing use of limited leisure time also appealed to the engineer in me.
This technique produced more uniform castings, cleaner sprue cuts, and required less effort to stay in the zone than previous approaches. Contrary to what one might think, the high production rate does not create a sense of hurry. Visually uniform castings simply pile up quicker than with the various other methods I've tried over a 25 year journey through the art of casting. I will check weight distribution since I have data on the last process, but based on the uniform appearance with very few rejects I have high expectations.
Thanks Bruce!
BeeMan
Tonight I finally got around to speed cooling the sprue as Bruce describes here:
http://www.castboolits.gunloads.com/showthread.php?t=57105
I tried it foremost to eliminate variation, based on Bruce's comments about temperature consistency and low extreme spreads for weight and dimensions. The discussion about efficient layout and maximizing use of limited leisure time also appealed to the engineer in me.
This technique produced more uniform castings, cleaner sprue cuts, and required less effort to stay in the zone than previous approaches. Contrary to what one might think, the high production rate does not create a sense of hurry. Visually uniform castings simply pile up quicker than with the various other methods I've tried over a 25 year journey through the art of casting. I will check weight distribution since I have data on the last process, but based on the uniform appearance with very few rejects I have high expectations.
Thanks Bruce!
BeeMan