Alvaro Hurtado

thanks a lot Gerry, I will think about it.

Thank you Gerry. My problem is the lack of space for doing the bench. A bell will take more space. I am trying to do a bench of about 60cm wide for 47cm tall for a BBR of 200mm. This is the reason because I try to find anybody with the experience of have done a similar bench.

Reading in the book, "the rocket mass heater, builder's guide" by Erica and Ernie Wisner, in the 6 chapter, they write the "equivalente CSA for gas flows. I would like to know if anybody has built a bench for a 200mm heater with a diferent dimension than 200X200mm for the gas tunnel, for example 160X250 or similar. would this give any problem with the chimney flow?
Thank you.