Slavia 630, Snatching Defeat from the Jaws of Victory

I had a spare bit of time so I figured I'd try and make the safety for the 2nd Slavia 630...

The blank steel rod turned down to basic dimensions.

I ground a 120 degree vee tool and plunged it in at slow speed. Great finish.

The 2nd vee.

Then the peak was turned down to diameter.

Using a parting tool for the smallest diameters.

Final 120 deg cut.

Then a 90 deg. chamfer on the end.

Swung the compound over.

Turned the knob to the taper and instead of knurling I turned some grooves.

Then some rings on the face.

Looks great.

I then made my first spring on the lathe, for the trigger. The two pieces of wood clamped in the toolpost provide just enough drag on the wire.

I used the tailstock drill chuck as a steady on the end of the drill bit I wrapped the spring around. It was barely closed on the drill, just enough to keep it from deflecting. The feed was setup to give 24 threads per inch, which is roughly the 12 coils for .55" of the spring.

Hey, a spring. I ground the pointy end flat.

So then I installed the trigger spring and test fired the rifle. It fired once and then it refused to cock...hmmm...was it the safety? I should have stripped the gun first shouldn't I? Because it wasn't the new safety.

The piston sear had been offhand ground by a myopic, drunken bear.

Really, it's just all wrong. Anyone have a spare Slavia 630/631 piston laying around? I could build it up with the welder and regrind precisely...I'd rather not.

The front of the piston...whoever had "smithed" the gun before me had turned off the lip that retains the piston seal...so the piston is stuck at the bottom of the tube for now. Not sure what those threads were supposed to engage. Probably a nut?

So I did all that work for nothing until I can figure out what to do about the piston...

Slavia 630/631 Miscellany, Part 2

Since I had the 631 apart I figured I'd clean and lube it.

Nasty red grease...

My sister up in Canada bought me some 630/631 piston seals from D&L airguns for my birthday. They won't ship to the states and I'm not selling them!

Not the best finish on the piston.

Polished it on the unitized wheel.

Same for the spring guide.

Much better.

I had a moment of genius and decided to bear against a bearing when reassembling.

Allows you to more easily thread the end cap into the tube. I think I'll make a better fixture in the future.

I had to release the tension on the barrel latch when inserting the pivot screw.

I don't know what the white stuff is (cocoa butter? soap?) but it was caked up on the spring that holds the cocking assembly against the tube.

I spray painted the plain aluminum muzzle break I made two years ago.

Finished flat black. Looks much better.

Slavia 630/631 Miscellany, Part 1

I needed to measure the barrel pivot lock screw, safety and trigger spring on the Slavia 631 so I could make replacements for the other beater Slavia 630 I bought. Disassembly is identical, almost, to the 630 (pt.1, pt.2)

My Slavia 631. The previous owner had chopped the barrel and did a terrible "stippling" job on top of the factory checkering.

The lock screw.

It's pretty tiny.

Measuring the thread length.

Using feeler gages to measure the slot width.

When it fits snugly you have the proper stack, in this case the .018" and .017" together.

I just couldn't see the thread gage at the fine pitch - I think it's .5mm pitch as that's standard for a 3mm screw.

So I dragged out my 10x toolmakers scope and checked the fit. Glad I was able to shoot this pic through the eyepiece.

Here's a sketch of the dimensions. The rounded head isn't critical and will be done with files. I won't bore you with the making as I already posted the operations for a screw here.

The Slavia 630/631 safety. Yikes.

The straight shoulder bits were easy to measure.

The centers of the angled bits? Had to eyeball them.

That's a seriously messed up set of dimensions in this uber-sketch. The rifle works without a safety so I don't know if I'll attempt making it. But if I do I'll need to make multiple prints with different dimensions for the various operations. I have no idea how critical the tolerances are.

The trigger spring? It's .552" overall length, .123" diameter, .0185" wire diameter and has about 12 coils with each end closed neatly. I couldn't find anything close in my drawers of springs so I'll have to make one I suppose.