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[Samuel]

Hi
I am new to the forum so apologies if this has been asked before
Having now retired i am returning to model yachting after 46 years
Last one was a Saxon 10 rater
Things have changed & i have started a Goth IOM
I want to make a plug & i am well on the way
However i want to vacumn press certain components, rudder, keel etc plus i am also aeromodelling as well so may want to do some wings etc
I know nothing about the technique & want some advoce on what to buy
Vacumn machines vary fromm hoovers to expensive bits of kit
I would consider £50 ok for the pump- is that realistic?
Plus what suction do i need?
Any ideas what i should buy & where from please
Also any ideas on the actual bag & hose connections etc
Any guidance would be gratefully apreciated

[TailUK]

I've seen reasonable results using those garment storage bags that you can evacuate using a hoover.

[boneash]

Hi and welcome,


I have read of and met someone using vacuum compression for real size boat parts and he used the vacuum pump from a farm milking machine with great effect.
These appear on ebay and local collective auctions, I would also imagine that a car air con compressor could be driven as a vacuum pump too as its a simple vane pump.
There are suppliers of bagging plastics which are just folded and taped to form bags


http://www.easycomposites.co.uk/products/vacuum-bagging


There is quite alot of info on the net


http://www.krsuper2.com/vacuumbag.html


for example,
New pumps are in the £170 area and you probably require about 25 inches of mercury vacuum and several c.f.m. to beat the leakage that is bound to be difficult to seal against, for the duration of the curing process.


Good luck and keep us informed how you get on.

[w3bby]

Not to disrespect the wealth of knowledge on this forum but one of the best places for vacuum bagging and composite advice is RCgroups, mainly planes but good anyway.