| The Shop > Metal Stuff |
| How big aught the vent in a metal melting furnace be? |
| (1/1) |
| S. Heslop:
Here's where i'm at right now. I read a thing online that said to give it 7x the cross sectional area of the burner tube, which worked out to about 60mm diameter with an inch wide burner. I've made a stack of MDF discs as the inner form, but I'm sort of feeling it looks a little bit small. I suppose itd make more sense to over-shoot the ideal size since you can cover it partially with a fire brick, but i'd rather not make it too big. |
| doubleboost:
Hi Mine vents through a 80 mm pipe (side vent) as the furnace is inside The hole in the top is 100 mm closed with a fire brick John 4-CXw |
| tom osselton:
Mine has a 4" vent hole too. |
| S. Heslop:
I guess 100mm is the way to go then. Thanks for the replies. |
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