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Repairing cracked trays

If replacement isn't an option, I'd try JB Weld epoxy. Prepare the surface carefully and follow the directions.
 
I've used Super glue, however it's also a sign the material is ageing and it's time to replace the older trays. Epoxy doesn't seem to work well.

Ian
 
Epoxy should work fine.

This has always been one of my pet peeves. Poorly designed and cheaply made photography trays. For the money they charge, you should get something a lot better than what they sell. Those corners need to be built thicker and reinforced because that's where the stress is when you pick them up when they're full of heavy chemicals. Some of my new ones cracked like that at the corners just from moving them around when they were empty!

I finally got disgusted and bought some storage trays from Walmart for small money to use for this purpose. They're made from a better, more flexible plastic. That old style hard plastic will crack and break very easily, especially as it ages. The old style, porcelain lined metal trays should last a lifetime.
 
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I have a set of 16X20 trays that I don't use very often, one developed a crack, I used fiberglass kit from the auto store, has help up over the years, but likely more expensive than buying new small trays.
 
Methylene chloride works on most plastic trays. It will have to clamped/secured while drying.
 
Any epoxy will do, 5 minute epoxy glue works ok and I have used that my self just fine, anything else is really not worth it unless you just can not replace the tray at all, once they start to crack like that they are really at the end of there life cycle.
 
If the trays are polystyrene, then maybe a dab of modelers cement.
 
Depends on the material. Hard-PVC and Polystyrene can be glued either with appropriate solvent-cements or Epoxy-cement.
I would not use super-glue (Cyanacrylate), but technically it would work too.

But due to the great strain put on the corner in any case I would make a bent reenforcement-piece from plastic and cement it at the back of that fracture.

Solvent cements soften the material. Best a lot of force is brought to the parts to get them in good contact. At corners as in your photo that might not be possible, Here epoxy-cement has an advantage,
 
If it's a poly- plastic it simply can't be glued; you have to heat-weld it. Only cheap trays made from solvent-susceptible material like styrene or ABS
will glue. But you might be able to temporarily seal a crack with a marine caulk. Just be certain its fully cured before putting the tray into use.
 
just fixed one of mine with slo-set superglue--working great on an old (i.e., higher quality) Paterson tray
 
DREW WILEY said:
If it's a poly- plastic it simply can't be glued; you have to heat-weld it. Only cheap trays made from solvent-susceptible material like styrene or ABS
will glue..
Click to expand...
"Poly-" is a prefeix used on many plastics and could be used on all.
It does not say anything about whether and how a plastic can be glued.
 
Go to your local Hardware/Home Depot Store...buy a $5.00 tube of High Temp/Motor/Oil Resistant Caulk. Use that, let dry 24 hours.
 
Your technique may be fine. It is likely that you are proving that the trays have a finite lifespan!
 
Marco Buonocore said:
Lots of advice! I will pick one and give it a shot. My trays always break in the same place (pictured). Perhaps my tray rocking skills need honing.
Click to expand...
I think that this is great evidence that you actually use your trays - a lot!

One trick I use for smaller prints is to put my 11x14 trays inside larger Paterson 12x16 trays. The outer tray catches spills, and the whole package is easier to agitate than a single tray.
 
Marco Buonocore said:
Lots of advice! I will pick one and give it a shot. My trays always break in the same place (pictured).
Click to expand...

Then you may consider cementing "bandages" as I hinted at to all your trays to stop them from cracking in the first place.
 
  • AgX
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I know a thing or two about this stuff. We sell around a million dollars a year of adhesives here, including to the marine trade. Testing whether a plastic is a true chemically-resistant poly and gluable is easy. Just rub some acetone on it and see if it hazes. If it does, its susceptible and will glue
with something appropriate like PVC pipe cement, Duco, etc. But things like polyethylene or polypropylene won't glue; and that's exactly why many
glues are sold in containers made from those very kinds of plastic! In my own darkroom I have trays made of numerous kinds of plastic, some gluable, some not, in addition to stainless tray, and acrylic trays I've made myself using solvent cements. If you want an epoxy a good common product would be PC-11 marine epoxy. It's a hardware store item widely available in small amounts, white, and holds up well in water.
 
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