Recent content by doubleboost

Hi I buy green sand from a local foundry they call it "Mansfield red" I sometimes use oil bonded sand to face off the mould This was the case with this cylinder John

Hi Lads You may find this entertaining http://www.youtube.com/watch?v=2VnqOhvLuQE John

I totally agree with you ceramic crucibles are the way to go I needed a big crucible for one pour (i could not get a bigger ceramic one in my furnace) All i was trying to show was how to make a steel crucible as safe as possible (have you seen what some people use) John

Hi Steel crucibles can be used ok for aluminium Ceramic is best for brass & bronze you also get better heat transfer in to the metal This link should take you to how i make steel crucibles http://www.metalworkingfun.com/showthread.php?tid=153...

Thanks for the kind words I did build a similar engine from bar stock Your twin runs very nice on air (they run better on steam) http://www.youtube.com/watch?v=CBzjt-puZRY Regards John

Hi Steve Looking good The burn pattern is in the correct place on the flame tube More gas and it would have been away John

Hi Lads This may interest you https://www.youtube.com/watch?v=7xAfH4XCzzI The build log is hear http://madmodder.net/index.php?topic=5461.0 John

Hi That runs very well I built one a few years ago http://www.youtube.com/watch?v=CBzjt-puZRY John

Very nice Steve A bit of a black art hole patterns on flame tubes :bow: :bow: :bow: Watching this thread with great interest John

Hi I used a fish tank pump for years with no problems at all Just make sure you get one with a good lift head John

https://www.youtube.com/watch?v=s0aNbxZj4qQ John

Thanks steve After burners are fun I am just modding turbos What you are doing is simply amazing :bow: :bow: :bow: John

Hi Steve. That is some fantastic work you are doing there. I have built a few gas turbines (using turbochargers)as the core Not quite modells but small scale This is how we start them http://www.youtube.com/watch?v=IND3eAI3YZk http://www.youtube.com/watch?v=am8P-OleztQ

Hi I have recently made a couple of these holders http://www.metalworkingfun.com/showthread.php?tid=113 The time involved make the Arc Euro ones a very good offer Mine have been very usefull John

Why is the hole blind If it was bored all the way through you could pass long bars through the lathe spindle ;D ;D ;D ;D ;D John