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43656

Re: Blazer torch

Mikey: The "thermal limit" was 12,000F! Still I like your suggestion of the perlite solidified with the sodium silicate. Just keep it where it is cooler. Carl
Carl
5:43 PM
#43656
 
43655

Re: Blazer torch

Mikey: I reread what I wrote and it could be taken two different ways.. Once more, more clearly. I fire my furnace up at 9:00 am and make a pour at 9:45 am.
Carl
5:27 PM
#43655
 
43654

Re: Blazer torch

Michael If you make the forge interior with a reflective coating and elliptically shaped, with the burner flame at one focus of the ellipse and the work at the
Malcolm Parker-Lisberg
5:01 PM
#43654
 
43653

Re: Blazer torch

Carl, Don't believe that chart. Both Perlite and sodium silicate melt at less than 2000 F, so they couldn't very well have their insulation value measured at
mikey98118
4:59 PM
#43653
 
43652

Re: Blazer torch

Thanks, Malcolm. Since it comes in rolls, I can probably find it here too. I didn't miss your comparison of it to the more expensive type of ceramic fiber
mikey98118
4:24 PM
#43652
 
43651

Re: Blazer torch

Carl, They used to post the figures; I can't help sales decisions. "Excellent thermal stability" sounds really good doesn't it? Tell me what it is actually
mikey98118
4:12 PM
#43651
 
43650

Re: Blazer torch

Carl, Yes, you have it right; that is what I'm saying. Mikey ... Mikey: I think what you are saying is that over a long period of being heated that the thermal
mikey98118
3:50 PM
#43650
 
43649

Re: Blazer torch

Mikey: I think what you are saying is that over a long period of being heated that the thermal efficiency of the ceramic blanket decreases by a noticeable
Carl
3:38 PM
#43649
 
43648

Re: Blazer torch

Michael In the UK you can buy it in a sack or by the roll, see:
Malcolm Parker-Lisberg
1:45 PM
#43648
 
43647

Re: Blazer torch

Good one, Malcoim! Very welcome information. BUT, the rockwool in my attic is loose clumps blown into place. Does rockwool come in blanket or board form?
mikey98118
1:13 PM
#43647
 
43646

Re: furnace insulation < was Blazer torch>

David, Well now, that depends on what the cost is, right? here are a few fun facts: (1) The the active ingredient in ITC-100 is zirconium oxide. (2) clear back
michaelporter1946
12:46 PM
#43646
 
43645

Re: Casting Defect Help

Have you considered casting it verically with a riser at the top so the metal enters at the bottom and rises evenly to the top. Flowing in one direction
Stephen Lovely
12:16 PM
#43645
 
43644

Re: Blazer torch

Brad, No splitter for this. NEVER EVER mix oxygen and fuel in a hose! Run a tube into the burner just forward of air openings in a Mikey burner, or into the
michaelporter1946
11:01 AM
#43644
 
43643

Re: furnace insulation < was Blazer torch>

Thank you. This discussion has gone further into furnace design then I have ever considered. I was just planning on lining mine with clay dug up in the
Jeremy Winder
10:39 AM
#43643
 
43642

Re: Blazer torch

Correction: I find that the 5250 figure was for MAPP gas propylene is 5200 (or 5198 if you prefer), but propane remains 4915. Mikey
michaelporter1946
9:44 AM
#43642
 
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