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PostPosted: Fri Mar 18, 2016 9:52 am 
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Joined: Wed Mar 16, 2016 12:45 pm
Posts: 13
From other post of mine. I think this section is the right place to report:

Muzmo wrote:
5. Put in a toughened steel piston sleeve with white grease. It is made from IKEA steel curtain rod. It took a lot of efforts to finish it to size. I think it was worth it.


Report on Success/Failure:

The airgun failed to load one time so I took apart to see what happened. To my surprise I found small pieces of metal inside probably coming between cylinder and piston to stop the action. So the hard steel sleeve had chipped. I cleaned it and found scratch mark of the small metal piece fortunately it did not travel forward.

Any idea why it happened?

I put in a teflon/PTFE sheet sleeve .5 mm in size. Will see how it will work. Atlease, it will not create metal scratch if broken at some place.



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PostPosted: Fri Mar 18, 2016 10:30 am 
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Location: Coalmont BC
My guess is the curtain rod was chromed, and a piece of the plating fell off....

Bob

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PostPosted: Fri Mar 18, 2016 10:48 am 
rsterne wrote:
My guess is the curtain rod was chromed, and a piece of the plating fell off....

Bob


My guess and also they wouldn't harden that steel

To harden steel they heat it up to a set temp and quench it for a set time. various times and steels yields different harden steel.

Like a Hammer is harden. But if you hit 2 hammers together they will explode.

They make targets out of harden steel so it shatters the bullets. But Ikea shower rod is probably just low grade stainless plated.


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PostPosted: Fri Mar 18, 2016 1:02 pm 
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Joined: Wed Jan 05, 2011 12:35 pm
Posts: 6016
Location: P.G. B.C.
RobertMcC wrote:


Like a Hammer is harden. But if you hit 2 hammers together they will explode.



Have you not done this as a kid? What kid has not done this - none ever exploded for me, however is is possible that a shard might fly off and be dangerous, especially to eye balls.
We use ball bearings and hammers to cut patched on bearing races for our muzzleloading rifles. Never had either a hammer nor ball bearging chip-shard or explode and we're cut thousands and thousands of patches this way. One of our BP members has cut over 100,000 thousand patches using a 2 1/2" ball and 1 1/2" bearing races - along with a 16 ounce hammer.
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PostPosted: Fri Mar 18, 2016 1:29 pm 
Daryl wrote:
RobertMcC wrote:


Like a Hammer is harden. But if you hit 2 hammers together they will explode.



Have you not done this as a kid? What kid has not done this - none ever exploded for me, however is is possible that a shard might fly off and be dangerous, especially to eye balls.
We use ball bearings and hammers to cut patched on bearing races for our muzzleloading rifles. Never had either a hammer nor ball bearging chip-shard or explode and we're cut thousands and thousands of patches this way. One of our BP members has cut over 100,000 thousand patches using a 2 1/2" ball and 1 1/2" bearing races - along with a 16 ounce hammer.
Image


That's what I meant. Chip fly off. Also you should throw that punch on a grinder to get rid of the mushroom before you injure someone at the shop.


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PostPosted: Fri Mar 18, 2016 1:52 pm 
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Joined: Wed Mar 16, 2016 12:45 pm
Posts: 13
I found the culprit.

This sleeve was pretty tight and I had tapped it in. The wall of the sleeve kind of cracked during the installation and broke afterwards, couple of small pieces.

The sleeve itself looks pretty good. The rod I used was a curtain rod which is hardened and could chip if tapped improperly. So it can be installed and will not have problems if the walls and edges are not cracked or forced. I will resize it and loosen a little on circumference. Next time when I will open the gun, I will install again with most care and I am sure it will hold there forever.

With this sleeve the gun would only produce a thud sound no vibrations at all.

Thanks for your input.


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PostPosted: Sat Mar 19, 2016 1:40 pm 
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Joined: Wed Jan 05, 2011 12:35 pm
Posts: 6016
Location: P.G. B.C.
I'm the only one in my shop and I am impervious - in my shop apron and goggles. Yeah- was thinking about grinding the splits off, but then, I don't use that one any more as it's a bit on the small size for .45 and too large for the .32rifle.

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Daryl


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