Iswhatitis Posted October 3, 2021 Share Posted October 3, 2021 No it’s not but if you replace at least half of the sand with perlite it performs way better than just p.0.p. And sand. Quote Link to comment Share on other sites More sharing options...
Frosty Posted October 3, 2021 Share Posted October 3, 2021 P.O.P isn't good anywhere close to the flame. It's okay at best as the insulating layer if it's far enough back from the flame face it can't be subjected to red heat. Promoting P O P as a suitable forge liner in any way when there are so many GOOD inexpensive alternatives isn't helping anybody. Frankly it's a disservice to the craft. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted October 4, 2021 Share Posted October 4, 2021 Plaster of Paris starts to degrade at only 1000 degF below good forging temperatures. This gives it a rather limited lifespan. If you plan to use the forge for more than one project; do it RIGHT, it doesn't cost that much and generally you will save the cost with lower gas usage over a fairly short period of time. Quote Link to comment Share on other sites More sharing options...
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