Cast metal partial model adhesive? and paint on liquid?

[skoo9382]

can anyone recommend me a pattern adhesive? the one i use tends to give me too much flash after casting, even if i water it down a bit.

and also....can anyone recommend a liquid paint on where i can paint on to my completely waxed up partial pre-investment so that i will have clean castings?
has anyone tried Nobilcoat Liquid Paint on from Patterson?

thanks in advance.

currently i'm using the Nautilus for my casting.

 

[araucaria]

can anyone recommend me a pattern adhesive? the one i use tends to give me too much flash after casting, even if i water it down a bit.
WTF!
and also....can anyone recommend a liquid paint on where i can paint on to my completely waxed up partial pre-investment so that i will have clean castings?

Follow manufacturers instructions all the way through - temps, mix ratios, times etc.. Get back to basics.
Techniques should be accurately carried out - you should easily discover where you're introducing errors.

 

[skoo9382]

actually...the adhesive i am using on the bottle does state, "Thin with water as needed".

 

[araucaria]

.apols.
flash is usually evidence of technique fluctuation/errors and expansion control.
Can you obtain Shera investments? German material - excellent stuff, no pre-vest needed. Great castings.
If silicon duplication is done and models are dried/warm no adhesive needed.
Otherwise austenal do a good adhesive - goes with the vitallium system.
I'm sure there are more ideas /opinions out there.

 

[skoo9382]

thanks for the advice. maybe i'll look into the austenal adhesive. although currently i am using Bego Investment.

 

[araucaria]

and also....can anyone recommend a liquid paint on where i can paint on to my completely waxed up partial pre-investment so that i will have clean castings?

Paint-on not needed with this stuff - Sheracast
SHERA : SHERA Great investments.
Investment is put directly onto wax pattern with no rough casts resulting.
Here's an example - sprues cut off and edges trimmed - blasted clean for photo.


here's a handy reference info sheet if it helps anyone
http://www.shera.de/fileadmin/shera/pdf/englisch/ebmplakat_engl.pdf