Best way to reseat Lyman Mould Collimating pins

[JWFilips]

This Lyman Wad Cutter Mould today towards the end of my casting session started causing me fits! I started getting Big fins and notice the mould became hard to separate! I recoated the pins and holes with Bullshop lube but it did not help....pretty sure the pins wandered out of position....That is the thing hangin up the opening of the mould!
What is the best way to reseat them?

 

[Brad]

I like a vise with soft, smooth jaws. A nice, slow, easy squeeze moves them with no chance of deformation. My vise has Al jaws I made and it works quite nicely.
Don't go too far or the mould halves will have some looseness when you try to twist the blocks. Easy to fix that, use a punch to move the pin back out a little.

 

[CZ93X62]

What Brad said, esp. the part that implies IT DOESN'T TAKE MUCH MOVEMENT. Very light taps with a small plastic mallet has worked for me, on the few times such work has been required IME. Since I started opening sprue plates with a gloved hand, my centering pin movement has largely halted--in either direction
.

 

[JWFilips]

Thank You!

 

[Rally]

Jim,
Look to see if a small piece of lead got peened into the pin or hole first, that will give the same fins, and pretty easy to do.

 

[JWFilips]

Rally, I checked that First; all is clear of lead

 

[JWFilips]

I Just tapped them back a bit with a brass mallet..... Now it works like a dream!