View Single Post
  #3   Report Post  
Posted to rec.crafts.metalworking
Steve W.[_4_] Steve W.[_4_] is offline
external usenet poster
 
Posts: 1,705
Default Plug 3/4-10 threaded holes

Tom Gardner wrote:
I pulled the bolster plate on a 30 ton Bliss press to repair the
hold-down bolt holes. There are 21 inserts that are "T" shape with a
minor dia. of 1.25" and the major dia. of the flange is 2", they are
installed from the bottom and are drilled and threaded 5/8-11. I
drilled them all out and threaded them 3/4-10. What happens is after
only 20 years or so the 5/8-11 holes get boogered-up and stripped.
sometimes the dies get changed 10 times a day. The 3/4-10 should last a
LOT longer and hold better. I want to plug all the holes that aren't
being used for that set-up so crap and little pieces of steel wire don't
get in the hole and shorten the thread life and hamper easy set-ups.

I looked on the web and I'm NOT spending $3-5 apiece. I will cut
threaded rod and grind or mill a slot for a screwdriver if I can't find
a better solution. The plugs have to be easy and quick to remove and
install and keep the spoo out. Any suggestions?



Take a look at http://www.caplugs.com/

They have plugs that will do that with ease. The high temp black
silicone I looked up quick ran about $00.50 cents each in a 50 pack.

If you want threaded they also have those and will make you just about
anything.

OH and they will send you samples for testing FREE!!

Used to use them by the thousands in the paint shop.

--
Steve W.