The method I use, often, for such cases, is to tape the surface, if possibl
e, then wet any exposed surface, to keep the glue from adhering onto the su
rface. Squeeze/press the glue into the crack, as best as possible, and, if
I think I need more glue deeper into the crack, I use the air hose to blow
the glue down into the crack. This method works best for me in most cases
I never thought to use suction, on the backside, but that should work, if y
ou can access the backside. For me, the air hose seems quicker and more co
Comments about syringes and needles:
Syringes and needles aren't (generally) perscription items. They are over-
Your local pharmacy has TB syringes with 5/8", 21 gauge needles, sometimes
lower guage needles (larger needles) are available, separately, as well. Y
ou likely have to buy in bulk, 100 per box. Any size needle fits onto all
syringe tips, so syringe size doesn't matter. If the hole in the tip of th
e TB needle is too small, for easy flow of the glue, snip off the sharp tip
of the needle, then pry open the shaft hole.... the shaft end having been
smashed flat by the snipping.
A local farmer's co-op may have larger needles, & supplies, for service to
livestock owners. Many farmers do their own routine injections and such.
You don't have to suck the glue from the needle end, to get it into the cyl
inder. Remove the piston from the upper end and pour/squirt the glue into
the cylinder.... a cleaner procedure, than sucking from the needle end.
Maybe your physician might sell you a syringe and large needle, also.
Your local surgical supply house will likely not sell you, directly, those
sorts of items, unless you know someone who works there. If available, pur
chase a damaged box at a discount.... now outlawed, here, that's what roost
er-fighting folks did, buy damaged boxes for their injections.