Solvent welding MB precious resin

[stoen]

Hello,

 

I’d like to learn is there a solvent which works for welding cracks in Montblanc Meisterstück plastic, commercially known as “precious resin” (cracks in section, cap lip etc.).  I’m familiar with techniques and tooling, only would like to know if someone could share which is the right solvent.

 

Thanks in advance!

 

 

[Nethermark]

See Ron's reaction in this thread

 

 

It seems, that MB's resin is hard to solvent weld, but I have no practical experience with crack repair on modern MBs myself

 

 

[stoen]

Thanks,

I guess it may have to do with the fact that “precious resin” is actually a self-polishing acrylic plastic.

[FarmBoy]

Probably more so that it is a heat set resin that cross links to cure during the molding process.

[stoen]

It’s probably also engineered not to be (that easily) repairable.

I managed fixing some cracks which are not under substantial crack widening stress with cyanoacrylate glue (aka. “superglue” - the simpler the better - no gel, no color), but it is not an ultimate solution IMHO. The glue kind of penetrates the surface and binds broken parts beyond expectation, half way between glueing and solvent welding. Yet, I’m curious if there’s a proper solution to the problem.

[copenhagenwriter]

I have had some luck using Revell Contacta Profesional. But it was not pretty. If the area is under stress, it's going to be difficult. I ended up using the glue in several layers which seems to hold. But it looks ugly and I have not dared to sand and polish it.

 

It was the nib-section of a 221p I repaired. I had to use several tries because of the stress the nib puts on the section.

 

/thomas