KemppiFrog
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- Aquitaine
I got prompted to remember to post up some of my early efforts (thankyou ChrisF)
So here goes..
If yoy actually want get heat in your abode, as opposed to improving the ambiance on your patio... These were my attempts.
The no. 1 was from a 45kg gas bottle and was made from ideas garnered from a trip to the US in '77. Bought a couple of books and looked hard.
Tools were: A buzz box, hand drill and bench shear. The gas bottle was chain drilled then hand cut with a hacksaw(!) Small angle grinders were not around then.
To get the S shaped path, I welded on a box (from sheet) to increase the surface area on the way out. It worked a treat, and I understand is still in action.
After people started turning up at my door with desperate looks on their faces and a gas bottle in the boot, I reworked the idea for 4mm sheet as in the second sketch. These are not to scale, but it is about 60cm long. The three tubes running through the gap between the baffles made quite a difference.
I started with a door frame in 40x8mm bar. The door was 20mm angle with a 2mm plate inside. Two 25mm holes in the original one, became a round ended slot with a sliding shutter to control the air inlet. The shell is 4mm. Try cutting that on a bench shear! Hinges were made from bar, until I found ready made ones to weld on.
Off to eat, will get back later if any questions. Plus some of the later production models.
So here goes..
If yoy actually want get heat in your abode, as opposed to improving the ambiance on your patio... These were my attempts.
The no. 1 was from a 45kg gas bottle and was made from ideas garnered from a trip to the US in '77. Bought a couple of books and looked hard.
Tools were: A buzz box, hand drill and bench shear. The gas bottle was chain drilled then hand cut with a hacksaw(!) Small angle grinders were not around then.
To get the S shaped path, I welded on a box (from sheet) to increase the surface area on the way out. It worked a treat, and I understand is still in action.
After people started turning up at my door with desperate looks on their faces and a gas bottle in the boot, I reworked the idea for 4mm sheet as in the second sketch. These are not to scale, but it is about 60cm long. The three tubes running through the gap between the baffles made quite a difference.
I started with a door frame in 40x8mm bar. The door was 20mm angle with a 2mm plate inside. Two 25mm holes in the original one, became a round ended slot with a sliding shutter to control the air inlet. The shell is 4mm. Try cutting that on a bench shear! Hinges were made from bar, until I found ready made ones to weld on.
Off to eat, will get back later if any questions. Plus some of the later production models.
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