Lifespan - can of Mastik glue

[ldamelio]

Starting to glue my own tubulars for every day use (after 20 years of 'clinchers are my life' and paying someone to glue my race wheels). I don't anticipate doing large volumes - probably 4-5 tires a year. How long does a well-sealed can of Mastik last ? Doe it dry up ?

[Too Tall]

Starting to glue my own tubulars for every day use (after 20 years of 'clinchers are my life' and paying someone to glue my race wheels). I don't anticipate doing large volumes - probably 4-5 tires a year. How long does a well-sealed can of Mastik last ? Doe it dry up ?

Yes, the solvent evaporates rapidly.

I use tubes because I don't have to fool around with re-thinning the glue when the solvent evaporates. Also, tubes are handy AND I really do not love the smell of a open can of glue.

[SignatureJustin]

Agreed, the tubes are the way to go. I actually don't even use a can for shop use. The tubes are cleaner and the smell from an open can is not something I can deal with.

[GrayJay]

If you are glueing new cyclocross tires and doing all the layers needed for a roll-proof job, you probably will go thorough an entire can of mastic for 4-5 tires.
If the can of mastic does thicken up a bit, you can add a bit of solvent to thin it back out again. Hexane is the solvent that mastic is formulated with. If you cannot find pure hexane, I have used small amount of acetone for thinning but Acetone is a much higher polarity solvent than hexane and will cause the mastic to precipitate into a tarball if you mix in too much. I just wouldnt use paint thinner which is likely too greasy and may effect the bond strength.
Use a hammer to firmly seal the lid of the can back down after use and evaporation will not be too much of a problem.

[sonny]

If you are glueing new cyclocross tires and doing all the layers needed for a roll-proof job, you probably will go thorough an entire can of mastic for 4-5 tires.
If the can of mastic does thicken up a bit, you can add a bit of solvent to thin it back out again. Hexane is the solvent that mastic is formulated with. If you cannot find pure hexane, I have used small amount of acetone for thinning but Acetone is a much higher polarity solvent than hexane and will cause the mastic to precipitate into a tarball if you mix in too much. I just wouldnt use paint thinner which is likely too greasy and may effect the bond strength.
Use a hammer to firmly seal the lid of the can back down after use and evaporation will not be too much of a problem.

whoa.

[Bssc]

a year of non use useless
6 months close to useless

no way no how are you going use a can for 4-5 that is a recipe for failure too much glue is as bad as not enough the tire peels off the same under riding conditions

one tube does a decent pro glue job
one and a half tubes does a great consumer glue job

[Too Tall]

a year of non use useless
6 months close to useless

no way no how are you going use a can for 4-5 that is a recipe for failure too much glue is as bad as not enough the tire peels off the same under riding conditions

one tube does a decent pro glue job
one and a half tubes does a great consumer glue job

Umm ahhh he is talking about CX glue job not road.

[junior2189]

if i can no longer smell it is that a problem?
Junior

[Tristan]

Agreed, the tubes are the way to go. I actually don't even use a can for shop use.

Likewise. With a tube you know it's fresh and someone's tubular won't roll off.

[lukasz]

if i can no longer smell it is that a problem?
Junior

Yes but it isn't the glue's problem if you know what I mean. Too much of a good thing... :)