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 Post subject: Another part in progress
PostPosted: Sat Oct 12, 2019 3:12 pm 
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Joined: Mon Jun 16, 2008 4:36 pm
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Location: nvvan
Decided to finally make another air stripper/shroud for a crosman sized barrel this time.
This will be another three piece one with an adjustable cone .
I made a custom mandrel sized at 7/16 So when I turn everything it is completely concentric.
I suppose if I had an extra barrel I could just use a barrel piece As a mandrill but I don't.

since my lathe so damn small
I make it into 2 parts machined Together at the same time

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 Post subject: Another part in progress
PostPosted: Sat Oct 12, 2019 10:19 pm 
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Location: nvvan
Mucho progress , My family is away until tomorrow morning so I've been available to be my workshop today a lot.

Still have to make the endcap for the other end of the shroud ,minor detail.
Also have to mill all the vents in the body of the airstripper.
I have to set up my index head to do the holes next.
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PostPosted: Sat Oct 12, 2019 10:35 pm 
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great work, very nice... 8)

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PostPosted: Sun Oct 13, 2019 11:54 am 
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Location: P.G. B.C.
Yes - very nice work.

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 Post subject: Another part in progress
PostPosted: Sun Oct 13, 2019 2:26 pm 
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Location: nvvan
Thank you!
On this one I'm trying to make it so that The tolerances are so close that it only needs O-rings to keep the parts together. The portion of the barrel mount and tube need two hands to pull them apart it's very tight.
I machined a slot in the cone for an O-ring to make it easier to adjust since my tolerances are so close ,
there's not much of an issue. I'm only going to use three set screws to secure it.
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here is my tiny unimat Set up for milling with a dividing head.
For scale size the chuck on the dividing head is 2 1/2 inches diameter.

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PostPosted: Sun Oct 13, 2019 6:12 pm 
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Location: Caronport, Saskatchewan
Very good!

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PostPosted: Mon Oct 14, 2019 9:34 pm 
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Thanks Wes
Here is my first time milling slots
wow it took a long time hour 70 mins.

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PostPosted: Mon Oct 14, 2019 9:39 pm 
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Nice small lathe you have there Walther


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PostPosted: Mon Oct 14, 2019 10:08 pm 
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pistolero wrote:
Nice small lathe you have there Walther

Thanks pistolero it's a unimat db200 from the lat 60's

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PostPosted: Mon Oct 14, 2019 10:22 pm 
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Was thinking of getting one from Harbor Freight, but doesn't know when to start, all I have is the mastercraft wood lathe that I have put in a 3 jaw metal chuck, I use it for trimming and shaving small parts and boring very simple parts.


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PostPosted: Tue Oct 15, 2019 9:05 am 
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pistolero wrote:
Was thinking of getting one from Harbor Freight, but doesn't know when to start, all I have is the mastercraft wood lathe that I have put in a 3 jaw metal chuck, I use it for trimming and shaving small parts and boring very simple parts.

The unimat db's have become collectors items now, really annoying s they parts ar stupidly expensive , I bought mine about 14years ago on craiglist and and have been adding more accessories toit from ebay over the years ,always checking ebay for stuff. I started with just the lathe, added the milling post, another chuck, index head , larger drill chuck and tool bits.
Sometimes I buy partial unimats for some of the parts and then ebay the rest. UK ebay often has better prices , seems to be a lot more hobby machinists in the uk selling or making custom bits.

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