4th Book in the “Gunsmithing Student Handbook Series” is Now in Print!

Being in the gun business for almost 40 years now I have become acutely aware if the lack of basics being taught in schools.  In particular in Occupational Trades institutions. Before you send me a nasty gram defending your favorite school keep in mind I teach at one of these colleges and have friends at… Read more »

After Market Pistol Barrels

In 2018 a new condition became obvious to us here at 4D Reamer Rentals LTD. In the past we saw certain reamers receive damage because of aftermarket cylinders out of Russia or China.  They were hardened by the maker to the point that only Carbide tooling could be used on them successfully.  We had clients… Read more »

What is chip welding?

The Chamber reamers that we carry at 4D Reamer Rentals LTD are all High Speed Steel (HSS). When we inspect reamers upon return from rental we look for a few things. Obvious damage of any kind. (dings, chips, modifications, burns, rounded edges to name a few) Dirt/metal chips from the reaming process Oil (in excess)… Read more »

To Laugh or Not to Laugh, That is the Question.

You hear some things on the phone that really make you laugh when you rent tools.  They might not be funny to the average tool user but maybe we need to share them to clear up some misunderstandings? One of my favorites is, “That barrel has been in the lathe forever waiting for the reamer.”… Read more »