Sun Plastic case adhesive

[ScutBoy]

I've come across a nice little Sparcstation 1+ but it has some pieces of the top case that have broken off - before I got it

Luckily, I have the pieces and so I'd like to glue them back on to improve the cosmetics as best I can.

I've had recommendations to use either MEK or Xylene as they will create a better bond by "melting/welding" the pieces together, as opposed to something like superglue.

If anyone has words of wisdom or experience to share, please pass it along!

 

[Paolo B]

I am doing right now the same job on the top lid of my HP 712. Unfortunately, the plastic got brittle and fragile and there’s a crack at one corner of the floppy slit.
I am using epoxy, but alone it won’t suffice, so I am skinning the case from the inside with a thin steel sheet.

 

[ScutBoy]

The answer in this particular case was Xylene!

IF the parts fit together tightly, just hold them together and use a fine modelers brush to let capillary action draw the adhesive into the crack. Sets within a minute, and basically as strong as the unbroken plastic within 20 minutes or so.

Not suitable for areas with gaps, but if the fit is tight, it works great - at least on Sun Microsystems cases like a Sparcstation 1+ and an Ultra 1.

 

[mmu_man]

For hard plastics like ABS the UHU Plast works quite well (it's acetone based), but it can get out of the crack and leave marks on the outside. Also, I usually reinforce the parts from behind with some blister pack plastic also with the same glue.

 

[Kai Robinson]

The answer in this particular case was Xylene!

View attachment 9050View attachment 9051IF the parts fit together tightly, just hold them together and use a fine modelers brush to let capillary action draw the adhesive into the crack. Sets within a minute, and basically as strong as the unbroken plastic within 20 minutes or so.

Not suitable for areas with gaps, but if the fit is tight, it works great - at least on Sun Microsystems cases like a Sparcstation 1+ and an Ultra 1.

Damn - that is a very nice repair - barely notice the crack line!