Cal G

I did a little work on the weekend rolling out some 420 SS pins and some 52100 to make up some San Mai billets. I love taking pictures of HOT STEEL.

Those diagrams are using the flow divider to preform a regeneration circuit. This one is wrong and will not work. The oil will take the path of least resistance and simple go back to tank instead of back into the flow divider. No matter how you do it you can ONLY have regeneration in one direction (rod moving out of the cylinder). You can never regenerate the rod back into the cylinder. Regeneration in a circuit is accomplished with special valving and not a flow divider for a number of reasons.

A 4" one that would generate ~16 tons @2500psi and 1.6in/sec @650psi and .4in/sec @2500 psi for the press (think Coal Iron Works 16ton press) and a 1" one generating ~1 ton @2500psi and 6in/sec and 1/4 ton (500lbs) @650psi and 26in/sec. I did a quick check and these velocities are correct but at 26 in/sec the forces required to accelerate and decelerate a mass moving that fast would be huge. I do not understand without looking at a schematic how a divider combiner would be used and you state that velocity id 49 in/ sec. With pneumatics you can exhaust the air through the

I have designed hydraulic system for over 40 years and believe me this isn't going to work with the parameter you have laid out here. That is why hammers are either mechanical or pneumatically operated.

Forged from 1080/15N20 stretched crushed W's, Desert Ironwood handles with stainless fittings.

A friend of mine acquired this knife and apparently it appeared on the cover of a knife magazine from the 70's. The knife has a makers mark J.M.M. and it was engraved by Shaw Leibowitz . I can find info on the engravers but was wanting to see who the maker was and if it actually did appear on the cover of a 70's knife magazine. Any help would be much appreciated.

1080/15N20 forged by maker, eyed crushed W's with stainless fittings and a Walrus handle.

Just finished this up to end the year, 52100/ 420SS San Mai hunter in Tiger G10

Don, someone told me it was carbon migration from the 52100 into the 420SS, I am not a metallurgist so I will leave that up to the experts. I know it does not happen when you use a 300 series SS. That is what makes this so interesting, it is an exact mirror image of how the 52100 is offset in the 420 SS with a shiny 420 SS line of separation.

52100 /420SS San Mai with dovetailed stainless bolster and G10 handle.

52100 core with 420SS sides,dovetailed bolster and an Ironwood handle.

Here is the process I have been using for years. When I first started making sheaths the stitching was so ugly the knives wanted out of them. You will have to use your imagination a bit because i do not have a sheath on the go that i am making so I will show you the jigs and the finished sheath. First of all my sheaths are glued together with drilled holes for stitching. I use a number 55 drill bit ( .055 )inches to drill the holes and spin it quite fast in the drill. I also use a couple of jigs to hold the sheath in place and at 90 degrees to the drill bit. h

RPM is good it might be a little short on HP @1/3 ,however I have seen disk grinders guys have made from old furnace motors that are 1/4 HP. Mine are 1200 RPM and 1/2 HP.

1080/15N20 twisted crushed W's ,stainless dovetailed bolster.

Alan it will be as flat as flat can be using the 1 degree. Most people can't hold anything with even pressure and get it flat even on a flat surface. I agree, theoretically in a perfect world it will have a very slight concave but unless you are using sophisticated instrumentation you will never measure it let alone see it.