JB Weld or ? Quick Water Tank Fix

MEXICOWANDERER wrote:
Many failures of bonding occur because the surface presents no gripping surface. Try using 90 grit

There are two types of bonds chemical and mechanical. There are not many adhesives that chemically bond to plastics like ABS. However I have had good luck with abrading the surface with 90 grit sand paper which causes more surface area because of the roughness and allows the adhesive to mechanically bond to the substrate. I sanded, alcohol wiped and used Shoe Goo on mine and it has held quite well. 90% of getting a good bond is the surface preparation. A product like Shoe Goo or Household Goop will flex slightly and still adhere to the substrate. An epoxy adhesive or a JB weld is much stronger but more brittle and can crack if the tank flexes. When my coolant over flow tank crack after ten years I used this method, 5 years later it cracked again in another area I repaired it again. I blew air in the tank to check for leaks and the tank cracked in may places due to the heat from the coolant and plastic getting brittle but the Shoe Goo held.