Anyone made their own crosman metal breach ?

[Shed tuner]

I've got a 16mm bar that'll do nicely.. means I can do it all without repositioning the work in the clamp too, as the travel in the mill is only around 70mm, whereas with your approach I could do the whole lathe bed length... can also fine tune the radius with cutter seating depth.

Just need to build a workpiece clamp on the toolpost, but that's not too big a deal... time to dig out the mig...

[hmangphilly]

I've got a 16mm bar that'll do nicely.. means I can do it all without repositioning the work in the clamp too, as the travel in the mill is only around 70mm, whereas with your approach I could do the whole lathe bed length... can also fine tune the radius with cutter seating depth.

Just need to build a workpiece clamp on the toolpost, but that's not too big a deal... time to dig out the mig...

How were you originally thinking of holding the workpiece jon ?

[--ped--]

you don't need to use a ball nosed endmill you can just mill slot like a falcon uses

[Shed tuner]

you don't need to use a ball nosed endmill you can just mill slot like a falcon uses

was thinking of the need for the transfer port seal to be close.. but then again, easy anough to make a new bespoke transfer port.

I'm actaully rather glad I started this thread - lots of interesting things to think about - thanks all for the ideas and input

[--ped--]

tp seals in the barrel so it won't make a difference really but if you did it like a falcon it would be a bit more work to get the clearance right

[--ped--]

this is one of my favourite breech's i've made

and the middle one is one a friend made for me in the style of a crosmods but to take a .20 rapid mag using a winerack barrel all the other parts i made or adapted

he also made this -all brass bar the springs stem and hammer

[Shed tuner]

Funny you shoudl post that first one.. the prototype I've just started on will be very similar...

[Shed tuner]

How were you originally thinking of holding the workpiece jon ?

I have a right angle milling adapter that sits atop the slide instead of the toolpost (with about 70mm vertical travel via it's own slide), which has a small machine vice mounted on it, facing the chuck.

I can modify an old crude tool holder to clamp the workpiece, so it can approach horizontally rather than longtitudinally...