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Dan22h - 9/11/2017 2:55:17 PM

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Warren (Staff) - 8/26/2014 3:13:16 PM

Unfortunately the Zyvax infusion spray tack is no longer manufactured. 

In order to hold these individual pieces of carbon on the mould’s surface we need to use some sort of spray tack, however, all of the spray tacks (including all of the so called infusion tacks) leave visible marks when used on the surface of the mould. This is because they are all designed for gelcoated or painted parts and not clear finish parts that are generally the norm for carbon fibre work. To overcome this, we do the following:

Invisible Epoxy Infusion Spray-Tack

1.    Start with a clean, small plastic ‘spritser’ bottle (any openable plastic bottle with a pump-action mister spray, like for hair-care products).
2.    Mix up 10g of infusion resin with 3g of infusion hardener and pour into the bottle.
3.    Add 10g of metholated spirits to the bottle (it must be purple meths, no white spirit, acetone, alcohol or anything else).
4.    Shake the bottle thoroughly.
5.    Spray a thin film of the spray tack over the surface of the mould.
6.    Allow the meths to evaporate and wait around an hour or two for the epoxy to start reacting when it will become particularly tacky.
7.    Stick your reinforcement to the tacky mould surface.

When you do the infusion, you will find that the tiny amount of spray-tack on the surface will cross-link with the resin of the infusion epoxy and become completely invisible with not even a trace of anything on the surface of your parts!

I tried this method on a car roof panel I made using infusion epoxy and glassfibre mat. once released from the mould i've found some patches of epoxy that appear bonded to the mould surface, there are rough patches on the roof iteslf from where it appears the sprayed epoxy has been pulled from the panel. I've tried chemically cleaning this off with no effect so I'm going to have to polish the surface again. Is it possible the purple methylated spirits has broken down the easylease release agent? If so is there a suitable solvent that won't remove the easylease?

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Matt (Staff) - 9/14/2017 9:43:39 AM

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Dan22h - 9/11/2017 2:55:17 PM

+x

 

Warren (Staff) - 8/26/2014 3:13:16 PM

Unfortunately the Zyvax infusion spray tack is no longer manufactured. 

In order to hold these individual pieces of carbon on the mould’s surface we need to use some sort of spray tack, however, all of the spray tacks (including all of the so called infusion tacks) leave visible marks when used on the surface of the mould. This is because they are all designed for gelcoated or painted parts and not clear finish parts that are generally the norm for carbon fibre work. To overcome this, we do the following:

Invisible Epoxy Infusion Spray-Tack

1.    Start with a clean, small plastic ‘spritser’ bottle (any openable plastic bottle with a pump-action mister spray, like for hair-care products).
2.    Mix up 10g of infusion resin with 3g of infusion hardener and pour into the bottle.
3.    Add 10g of metholated spirits to the bottle (it must be purple meths, no white spirit, acetone, alcohol or anything else).
4.    Shake the bottle thoroughly.
5.    Spray a thin film of the spray tack over the surface of the mould.
6.    Allow the meths to evaporate and wait around an hour or two for the epoxy to start reacting when it will become particularly tacky.
7.    Stick your reinforcement to the tacky mould surface.

When you do the infusion, you will find that the tiny amount of spray-tack on the surface will cross-link with the resin of the infusion epoxy and become completely invisible with not even a trace of anything on the surface of your parts!

I tried this method on a car roof panel I made using infusion epoxy and glassfibre mat. once released from the mould i've found some patches of epoxy that appear bonded to the mould surface, there are rough patches on the roof iteslf from where it appears the sprayed epoxy has been pulled from the panel. I've tried chemically cleaning this off with no effect so I'm going to have to polish the surface again. Is it possible the purple methylated spirits has broken down the easylease release agent? If so is there a suitable solvent that won't remove the easylease?

Hi Dan,

Thanks for the post. That's a really unexpected result that you've got there and not something I've seen before. It does sound and appear that you're correct in thinking that the solvent in the spray tack has somehow prevented the Easy-Lease from doing its job properly however there are numerous examples of similar solvents being used on Easy-Lease (our FusionFix for example contains acetone which is generally more aggressive than alcohol) and we've never seen that disrupt the release agent. Although it seems slightly counter-intuitive, I guess you could try using a small amount of acetone as a thinner instead of the methylated spirit but having said that I really would not have expected a small amount of meths mixed with the resin to have disrupted the Easy-Lease either.

What was your application procedure for the Easy-Lease?  Did you have multiple layers down and allow it to fully cure (at least an hour) before using the spray tack?