HS-4 is the Hot Stuff Original thin CA glue in a 2 ounce bottle from Satellite City.
Hot Stuff Original is a thin CA (Cyanoacrylate Adhesive) glue (red label) with a viscosity (3 cps) similar to water and no surface tensioin. When you have parts that fix 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 alos use this instant glue on carbon fiber or fiberglass cloth instead of using resin! Hot Stuff CA glue will harden other types of cloth as well - in fact, professional dancers at top ballet companies us Hot Stuff to strengthen the material of their pointe shoes.
Curing time is five seconds between tightly fitting, non-porous parts. It is 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 open will experience a shorter shelf life if they are continually taken out of and put back in cold storage.