TheR3aper2099

Thank you Slag

I am not concerned with the appearance just structural integrity. 
I am putting another layer of hellcote 3000 on before I apply this ITC-100HT, which should seal it up good.

I used a layer of cleanburn refractory and then a layer of hellcote 3000 which is when I saw the rust spots and the hot spots as well.

Hello! 
 

I am new to this forum but been smithing for 5 years. 
My gas forge has a few hot spots that show up during the initial light but then fade away once I’m up to heat. I have not had this happen before and I have just re-lined my propane forge. Also I have some odd looking rust spots that showed up this morning after working last night on the liner. Any ideas on what could cause that? Thank you in advance!