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Smooth Machining

Posted: Wed Oct 12, 2016 7:28 pm
by Historian
Ref: << https://www.youtube.com/watch?v=s--2-mMCy_I >>

Of note is the way the cups drop into the tube so seamlessly,
like well made pistons. And the ribbed outer tube is a novel
design ... and trying to figure is such sculptured ribs could
be made on a regular lathe.

Have any folks with a stamp actually jumped started their final products
with these building blocks?

Re: Smooth Machining

Posted: Wed Oct 12, 2016 9:00 pm
by yondering
Historian wrote: Have any folks with a stamp actually jumped started their final products
with these building blocks?
A friend of mine built a form 1 with a "Prepper's Discount" tube. They are kind of a stupid product IMO; very heavy thick aluminum tube and the marketing is aimed at people who really don't have any idea what they're buying. His tube material was marketed as "german aluminum" lol.

Re: Smooth Machining

Posted: Thu Oct 13, 2016 1:37 am
by fastfire
Where do ya put the nfa required print with the spiraling?

Re: Smooth Machining

Posted: Thu Oct 13, 2016 10:04 pm
by a_canadian
I've never understood this company's obsession with fine knurling. It's an icky sort of finish on a can, more like something you'd put on a set of dumbbells. This spiral goes way beyond knurling for stupid and pointless decoration. It's like some sort of dildo, only not likely good for that either. A knurled, corkscrewing aluminum dildo.

Re: Smooth Machining

Posted: Sat Oct 15, 2016 5:24 pm
by Zombie1969
Funny thing is if that was a dildo someone would buy it.

Re: Smooth Machining

Posted: Mon Oct 17, 2016 6:55 pm
by Historian
The way the cups slid effortlessly down the tube was needed in
making telescoping tubes for M2 ( Leica, not Carbine ). Guidance
often given is that when you are within .0015" finish by using
fine polishing strips.

For SS this works well but aluminum developed a rough surface
which erased near mirror finish rounded tool produced.

Remembered the use of quadruple zero ( 0000 ) steel wool
finishing stocks on rifles and pistol grips in applying
stain and then polishing with dampened quad4 pads rubbed in
Mother's Canuba Wax to get lustrous finish on wood.*

Took 2quad-4's and rotated cylinder. Mirror finish and converged
to spec. Tube slid into outer tube like the cups in video.

Some might find useful.

<< https://www.youtube.com/watch?v=85HxidMLf5Y >>

Re: Smooth Machining

Posted: Mon Oct 17, 2016 9:15 pm
by yondering
0000 steel wool is referred to as "four aught" wool (like how 00 Buck is called double-aught buck). It does work very well for burnishing aluminum and titanium on the lathe.

Re: Smooth Machining

Posted: Tue Oct 18, 2016 6:50 am
by Historian
yondering wrote:0000 steel wool is referred to as "four aught" wool (like how 00 Buck is called double-aught buck). It does work very well for burnishing aluminum and titanium on the lathe.
Thank you for this. Never heard 'aught' used except for '00 Buck'.
Makes it easy to write.

In old Southie the notorious hangout "Triple O's" ( for O'Neil brothers )
would never have been referred to a 'Three Aughts' ... it would have
earned 'Two-Twos' in-the- Hat'. :) :)


Best.