gassforge for ht help!

[Rasmus Kristens]

I just build a small propane "forge" with 5 insulating firebricks and a propane torch.
The forge is just for HT instead of using charcoal.

I just did my first knife, and im not sure if it went well.
Therefore i have a few questions:

1. I'w read about gas forge reslting in more decarb than charcoal, but i'm not quite sure i understand why or how it happens? And surely not how to avoid it.. Does the amount of oxygen have something to do with it?

1.1 I did 3 normalization cycles, is that necessary for stock removal? In case of decarb, i expect that the normalizitaion can make it worse?

2. The forge is build with bircks in the botton, sides and top, and then a brick closing the back. Is it best to have the back closed or open? The front i kept close till the forge was hot.

3. Is there anything specific i need to take care of when i use a gasforge?

4. I tried making a hamone with furnace cement. Should i be able to see the hamone right after HT or do i need to etch before it appears?

5. Should i expect to get a hamone on carbonsteel like 80crv2?

Wow that was a lot.. Looking forward to hear your wise words :-)