Blue ink? Marking liquid

W

Wannabegunsmith

New member
I helped my cousin fix his Beretta 84. It had the common problem where he couldn't get the slide off so you just have to file down the metal where the guide rod rubs. We used a blue "ink" substance and put it on the metal on the frame and inserted the guide rod and worked it back and forth and thus is rubbed off the blue liquid showing the bare metal where it was rubbing, showing where the two parts rubbed and where to file down.

I was curious if anybody knows what it is? A blue liquid like ink. Doesnt dry up and was in a little squeeze container like a little "travel" toothpaste.

Any ideas?
 
Dykem or Prussian Blue.

Dykem is brushed on a surface, usually to facilitate scribing lines on machine parts for machining purposes.

Prussian Blue is a very thin fluid/semi-liquid that is usually used on one machine surface that is to be mated with another to determine where high spots/points of interference are located. The blue will transfer between surfaces.

A word of warning. . .a LITTLE Prussian Blue will go a LONG way. . .
 
"Dykem or Prussian Blue."

Or Sharpie...:rolleyes: Dykem/PB is also carcinogenic IIRC (mildly so, but still), and yes it will stain you down to your bones (see again the carcinogenic nature ;) )

TCB
 
The stuff you're looking for is called "Hi-Spot".
Click to expand...

Dykem Hi-Spot is more of a paste and usually ends up being more of a mess when applied. The Dykem liquid is easier to use, and the brush on application goes on extremely thin. Avoid breathing the fumes.
 
You must log in or register to reply here.
Back
Top