Best way to fix hairline cracks in ABS?

[ob1al]

Like the title says, what's Best way to fix hairline cracks in ABS?

 

[Eagle]

Epoxy resin?

 

[ob1al]

Applied to the inside of the piece?

How about the old standard, superglue? Any good for this type of repair?

 

[Eagle]

Applied to the inside of the piece?

Possibly, although resin can be applied to the crack then the excess scraped/picked away.

How about the old standard, superglue? Any good for this type of repair?

Superglue would probably work but would more than likely discolour or burn the ABS I would think.

I'm no expert though! Do you have any pics of the cracks?

 

[SSR]

You haven't described what you want to repair. If you can hide the repair by working on the inside, perhaps just some ABS glue would be ideal; it is essentially a solvent so it should be able to work into the cracks and help blend the ABS back together.

 

[Yorpheus]

Does ABS glue work similarly to Tenax 7R or Plastruct cement? Both products are advertised as a "plastic weld" which actually melts plastic together. I've never tried it on ABS but it would seem like the right thing to use to fix cracks.

 

[Chris Martin]

ABS shouldn't get hairline cracks. Are you sure it's ABS? Is it painted? The only sure way to stop cracks from reappearing or growing is to grind/cut them out and/or drill tiny holes at the end of each crack and fill.