Grouser Posted January 14, 2022 Share Posted January 14, 2022 Here's a quote from Chile Forge webpage warning about the dangers of corrosion from using flux. " Forge accessories Replaceable Ceramic Shelves If you have done forge-welding, we don't need to explain the corrosive nature of flux. To those who are considering trying, a word of warning: Flux can ruin a forge floor in a single session. It is nearly impossible to get off once it's in your forge and it will stick to everything it comes into contact with." I've never seen anybody be careful about using flux in their gas forges what say you? Quote Link to comment Share on other sites More sharing options...
JHCC Posted January 14, 2022 Share Posted January 14, 2022 There have been quite a few discussions here on IFI about the corrosivity of borax. The general consensus seems to be that it will blast right through ceramic wool and that it degrades other materials to different degrees. One reason that Kastolite is frequently recommended is its general resistance to melted flux, although it does wear down over time. High alumina kiln shelves are practically impervious to flux and can be purchased from pottery supply places. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted January 14, 2022 Share Posted January 14, 2022 People have also used stainless trays with a layer of clay kitty litter. Extensively discussed; just perhaps not with the term corrosiveness. I've several times used the analogy "Like boiling water through cotton candy!" talking about it. Quote Link to comment Share on other sites More sharing options...
JHCC Posted January 14, 2022 Share Posted January 14, 2022 Just to be clear: unused kitty litter. Quote Link to comment Share on other sites More sharing options...
Grouser Posted January 14, 2022 Author Share Posted January 14, 2022 Yes I would definitely avoid the lumps in the kitty litter LOL. So rumor has it you don't need flux because there's so little scale built up with a gas forge,,,, what's your thought on that,,,, sales pitch or truth? Quote Link to comment Share on other sites More sharing options...
Mikey98118 Posted January 15, 2022 Share Posted January 15, 2022 A lot of pitch, and very little truth. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted January 15, 2022 Share Posted January 15, 2022 Wow; I've used a propane forge just to create a thick scale layer on a project. It depends entirely on how you manipulate the atmosphere in the forge. Quote Link to comment Share on other sites More sharing options...
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