From: Chris Springer <ironhammerstoneworks(at)>
To: Norbert Senf <mheat(at)>
Date: Wed, 28 Oct 2009

Hi Norbert
I did not get a chance to write an evaluation before I left, so I thought I'd email it to you.
I liked the workshop very much.  I think that it ran very smoothly.  The classroom sessions were informative and helped me understand the chemistry of wood combustion much better.  I am having a hard time trying to think of any way to improve it.  I think it will be a very worth while addition to the heater masons reference manual.  I think a course on sizing a heater to a house might be helpful, figuring out heat loss and insulative values. It seems like a heater mason needs to be as knowledgeable as an HVAC technician when meeting with clients.  I am starting to build a bell heater in my house that Alex designed and would be willing to test it to help collect more data on custom heater designs.  Maybe the MHA could have a mobile Lopez Labs to collect data from numerous heater designs in the future.

Thank you for putting on the workshop.
Chris Springer
Iron Hammer Stoneworks, LLC
427 North Road
Danbury, NH 03230
603-768-3393 office
603-387-9889 cell