Lyman mold problem...

[TexasGrunt]

The set screw for the sprue screw keeps backing out. Then the sprue screw does the same.

Suggestions?

[Chill Wills]

Drill and tap a set screw for the set screw?

Hmmmm....

Maybe try a few other screws in the set screw hole to see if it is just that screw.

Failing that, drill it out to the next size larger and retap.

[superdan]

You could stake it lightly or take the set screw and deform the threads slightly so that they are a tighter fit in the threaded hole.

[Devon]

Take one strand of steel wool and put it in the hole prior to the set screw.

[KYCaster]

Yeah, what Devon said.

Or a small wad of aluminum foil or brass foil/shim stock.

Jerry

[country gent]

I have had that problem simply buy a longer set screw at the hardware store and a nut set the spue plate screw then tighten the set screw and install the nut using it to jam the set screw.

[Chill Wills]

You could stake it lightly or take the set screw and deform the threads slightly so that they are a tighter fit in the threaded hole.

Yep - I like these ideas. The steel wool or superdan's idea as a first quick remedy. Very lightly peen a thread or two, try. Peen more IF Needed for an interference fit.

I had a feeling if I checked back I would learn sumptn.

[Teddy (punchie)]

Steel wood idea or some thin copper wire. These will get you by for the short term.

[WALLNUTT]

country gent has a good fix. I picked up a used mould that had that done and it works great.

[TexasGrunt]

I have had that problem simply buy a longer set screw at the hardware store and a nut set the spue plate screw then tighten the set screw and install the nut using it to jam the set screw.

Sounds like a good idea. Hardware store here I come!

[MT Gianni]

Mark and file a flat spot on the sprue plate screw that the set screw contacts. Using a piece of copper wire between the set screw and sprue screw works but i suspect your threads are worn enough that this won't matter. The only other idea not suggested is to retap to the next larger size.

[gwpercle]

Try the steel wool strand , I didn't believe it would work.... but it has solved several mould screw getting loose problems. After doing it they have stayed tight .
Gary

[duck hollow pete]

Thank You CountyGent never thought of that WOW!!!!

[TexasGrunt]

I purchased a longer set screw and a nut. Problem solved. Now if I could find what's on the mold face that's causing the small bit of flash.