HS-4 is our Hot Stuff Original thin CA glue in a 2oz bottle.
Hot Stuff Original is our thin CA glue with a viscosity (3cps) similar to water and no surface tension. When you have parts that fit exactly together, first get them in position, then run this instant glue along the crack, and it will wick right in. If you have tight-fitting joints of non-porous material, Hot Stuff thin CA glue will give you the best results as it will not create any extra space between the pieces, and since you get the parts aligned before applying this instant glue, you can be sure they will be perfectly in place when the glue cures.
This thin super glue is also ideal for filling and stopping the spread of splits and hairline cracks in furniture, gunstocks, wood being turned on a lathe (such as pen blanks), and stone. To strengthen stone and porous wood, apply Hot Stuff CA glue to the entire surface and allow it to soak into the pores and cracks- you can also use this instant glue on carbon fiber or fiberglass cloth instead of using resin! (See our fiberglassing tutorial. Hot Stuff CA glue will harden other types of cloth as well- in fact, professional dancers at top ballet companies use Hot Stuff to strengthen the material of their pointe shoes (see our pointe shoes tutorial).
Curing time is five seconds between tightly fitting, non-porous parts. We recommend using the NCF Quick CA glue accelerator to ensure a complete cure of the bond. Store unopened bottles in the freezer to extend shelf life. Bottles of super glue (any brand) which have been opened will experience a shorter shelf life if they are continually taken out of and put back into cold storage.