Im an engineer in this life!! I just cant do maths.. which is a requirement for "normal" engineering and getting any kind of qualification.. so I have to keep it as a hobby and never went into the feild properly.
The bubbles in the helmets were approx 0.75 to 1mm in diameter. Any bubble is unacceptable.
I want to be the first miniatures manufacture to replace
"due to the nature of the casting process, your parts may contain small bubbles blah blah blah"
with
"Our parts are always flawless, if you find any defect or bubble of any size, we will refund the money and you can keep the part"
But to do that, I need a state of the art set up which can consistently produce parts with no bubbles at all, which is why im so interested in casting in a total vacuum..
I can get an electronic guage for £150, or a regular guage for £20.. Im going to stick to the cheap one for the time being!!
reguarding the pump, eventually I want this-
http://www.javac.co.uk/vector-high-vacu ... 16245.htmlI have no idea how much it is, but it can pump down a 20L chamber to 0.01mbar in 45 seconds..
thats 99.999% of the air removed.. in less than a minute.. air bubbles? what air bubbles?
Ive been running anvil industry for about 9 months now. Its incredibly hard work, and im still not making enough money to move out of my parents house yet, but Im confident I will, and I know I want to run the company long term, at least 5 years. Which means its well worth investing in state of the art vacuum technology, as soon as I can afford to.
I will order the vacuum gauge tommorow and try and leak proof the chamber a bit better..
AH