| || i took myself and any around me game enough to move into the night, and built a glass blowing furance.|
it didn't work.
i built another. bigger. stronger. prettier.
victory was assured this day.
| this ugly little steaming mound, gained a respectable 750°c. i reconned it was coz the top camber was to small. so i and i fired it again. (just to check)|| |
| || this is it at 750°c. blasting fire from every orifice. |
one of the theories i had scrapped from the living knowledge base is that these fires move fast. you want big open mouth, and a large exit point, which actively draws. you can see the top exit isn't nearly big enough. this was pretty exciting however.
| this guy got built and fired to a top temp in 11hrs and only cost (AU)$50 in materials. |
yes sir, i do bite my thumb in your direction.
| || i used an internal wall of concrete 'fire brick' it was cheap and available. it worked. |
the fire box in excavated Roman examples seem to have been buried. i choose not to dig holes in the harsh, dry, drought struck Australian landscape. i built up.
begin ring of brick. 1.5m diameter
| use local materials; a good clay topsoil; local rotting staw; small rock; water. mix till daub. use as render and mortor.|
build up layers in decreasing size. start stoke hole.
| || build up until you have approx cone shape another 1.5m high. (call this approx 1/2 cubic meter of fire volume). the hole for the inner shelf is only slightly smaller than the stoke hole. - i end up making the stoke hole bigger also. it seems counter to be not choking this up as much as possible. but it really works. trust me. |
| build up the walls and then the to exit is only reasonably smaller than the hole pictured above.|| |
| || a good thick solid coating of daub is now applied. and big fist sized rock pieces embedded into it. this then has another layer of render over the top. |
touching this with your hand at top temp was 'uncomfortable' but a foot + of this stuff sure keeps the heat well trapped;.
| the finished result. i recon it looks grand. those present claimed it was very sidney nolan. woah.|
you are looking at the gathering port/glory hole side
| || knowing plebians or rouge 'roos would hinder my achievements i rock ringed my work area and set a fire to burn. this is about 800°c i held there for a bit to 'let the render dry. |
the thing nearly torn in half. yes i know it should have been lower and slower. but this was cool to see.
| this is the same 800°c fire. you can see the yawning mouth opened wide. and the pots on top warming. i melted the glass in these later. also the forming crack is beginning to make itself noticed. it gets awesomer but always will this be an image in my mind.|| |
| || top temp 1110°c held for 3 hours. i repeated this 3 times over then next 3 days (nights) reducing the top temp - 1050°c as it was a little easier to control the glass.|
mies (hat), amy (middle), and i piktured.
| i love this pik. look at how solid our bodies are locked, we're a team, and we're doing it my way. cool. you can see the movement in our arms and the glass itself however. |
again. i bite my thumb, at you.
| || this last pik i also like. i'll confess to being hideously unprepared for the result i actually achieved. here i'm running a pipe up and down my leg. no bench. woot. archaic|