The ash is going to consist of anything from fine powder to a chunky material. That won't work.funstuff wrote:I already have an 8inch high space for getting ash. I think some sort of fan to blast the ash off the coal every now and again might do the trick. We will see. I have looked at quite a few designs.
Here's grate from EFM hand fired boiler for example:
The efm WCB-24 hand fired wood/coal boiler