How to get a piece of cast iron sheet about 30cm x 30cm?

daveyjp

Plenty of cast iron griddle pans available on line.

Bookworm105

FreeBear said:

GervisLooper said: Stainless steel it says should actually be less tolerant then mild steel, the latter which was already a bust.

I don't get that because I have stainless steel pans which don't bend when cooking on the top so why would the mild steel bend so much when apparently it has less thermal expansion, according to that list, than stainless steel?

A pan doesn't bend like a flat sheet would because of the shape. Pan bases are usually fairly thick, and the edges are constrained by the sides.

If you were to weld (or rivet) some stiffener strips to your flat sheet, that would go some way to reducing the distortion.

unless he has the kit to weld cast iron then it would be cheaper to buy a  new stove than set himself up for that one off task

if still fixated on CI then plenty of 30cm + cookware on the market. Simple enough to cut/shape (bodge) with a grinder

FreeBear

Bookworm105 said:

FreeBear said:

GervisLooper said: Stainless steel it says should actually be less tolerant then mild steel, the latter which was already a bust.

I don't get that because I have stainless steel pans which don't bend when cooking on the top so why would the mild steel bend so much when apparently it has less thermal expansion, according to that list, than stainless steel?

A pan doesn't bend like a flat sheet would because of the shape. Pan bases are usually fairly thick, and the edges are constrained by the sides.

If you were to weld (or rivet) some stiffener strips to your flat sheet, that would go some way to reducing the distortion.

unless he has the kit to weld cast iron then it would be cheaper to buy a  new stove than set himself up for that one off task

Sorry, I should have made it clear I was talking about mild/stainless steel sheet.

goldfinches

I might be wildly offbase here but would something like this hob protector help if you get another glass top?
Bake-O-Glide® Induction Hob Protector

GervisLooper

FreeBear said:

GervisLooper said: Stainless steel it says should actually be less tolerant then mild steel, the latter which was already a bust.

I don't get that because I have stainless steel pans which don't bend when cooking on the top so why would the mild steel bend so much when apparently it has less thermal expansion, according to that list, than stainless steel?

A pan doesn't bend like a flat sheet would because of the shape. Pan bases are usually fairly thick, and the edges are constrained by the sides.

If you were to weld (or rivet) some stiffener strips to your flat sheet, that would go some way to reducing the distortion.

Hmm well the metal I had was much thicker than a pan, can't remember but around 6mm maybe.

Anyway I just bought another one of the glass ones and have fitted it now. I will pay better attention to keep bother surfaces free of obstruction.

Mistral001

If you have have had to replace the glass several times, then it looks like it is not robust enough for the job you are asking it to do.  A different type of stove might be the best and, lets face it, the safest option.  

PS.  If the glass has not been designed to take the wear and tear that the stove is being given, perhaps other parts of the stove will have not been designed for that amount of wear and tear either.  I am thinking burner parts and safety parts such as shut of valves.