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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Cracked rings
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<blockquote data-quote="TheLabGuy" data-source="post: 29146" data-attributes="member: 126"><p>I use Formula 1 and have for a couple years now for all of my pressings and never had one crack. However, I am usually doing 100 gram rings most of the time not 200 gram. I will say I do let them set up for a good half hour (especially during the winter months) before I throw them in a heated oven. Maybe Formula 1 isn't stable enough in a large amount (200gm),the expansion forms a crack, like real thick concrete does, just a thought. Is anyone using a 300 gm ring with Formula 1, I'm sure it would be really noticeable if that hypothesis is true?</p></blockquote><p></p>
[QUOTE="TheLabGuy, post: 29146, member: 126"] I use Formula 1 and have for a couple years now for all of my pressings and never had one crack. However, I am usually doing 100 gram rings most of the time not 200 gram. I will say I do let them set up for a good half hour (especially during the winter months) before I throw them in a heated oven. Maybe Formula 1 isn't stable enough in a large amount (200gm),the expansion forms a crack, like real thick concrete does, just a thought. Is anyone using a 300 gm ring with Formula 1, I'm sure it would be really noticeable if that hypothesis is true? [/QUOTE]
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Lab talk, the good, the bad, and the ugly
All Porcelain-Press
Cracked rings
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