Author Topic: Penzel Mueller Serial Time line  (Read 32720 times)

Offline Chotii

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Re: Penzel Mueller Serial Time line
« Reply #120 on: August 01, 2020, 04:04:31 PM »
And here is this one:

PM Brillante, serial number M3931-B

Acquired today from a thrift store. Wood is not cracked or dry that I can see. Joints feel loose. Pad seem fine but I do not play clarinet. The rings look silver plated.

Hi, Iím new. :)

Online GrumpyMiddleAgedMan

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Re: Penzel Mueller Serial Time line
« Reply #121 on: August 02, 2020, 02:13:49 AM »
I lifted this off an eBay auction. I didn't buy it but thought it would be pertinent to this conversation. Its not an exact date of manufacture but it gives an approximate date.
Only happy mistakes here.

Offline kewald

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Re: Penzel Mueller Serial Time line
« Reply #122 on: August 04, 2020, 05:43:48 PM »
I purchased a Penzel Mueller Bb Clarinet on Ebay and am in the process of restoring it.  The clarinet is marked "LP" and "B".  SN is 11832, so apparently it was made ca. 1935.
This was one of my earliest restoration attempts and I made mistakes that ruined two of the key posts.  Essentially, the posts must be replaced or remade. Then fitted to the body and drilled, faced and tapped for a new rod.
Background of the opportunity to learn: When I received the instrument, the Hinge Rod was stuck in the posts and was too short, driven in by someone who broke one of the slot tangs.
Mistakes made:  Tried getting it out by grinding a flat on a spare rod to mate it to the remaining slot - used it like a screwdriver but couldn't get it to budge.  Then, clamped the joint in my drill press vice and drilled out the rod, which messed up the hole in the post when the bit drifted.  Don't recall the exact sequence of subsequent events, but I believe I may have gotten the posts out of the body and then in trying to extract the thread end of the rod - broke it off.  Drilled it out messing up the hole again.  Silver soldered some brass rod into the holes, remounted the posts and tried to drill through one into the other.  Of course, I don't have the proper equipment, so those holes didn't work either.  Filled them both with silver solder and set the project aside. 

That was a few months ago.  In the meantime I've learned a better way of extracting impossible rods - cut between the hinge and post at the slot end with a jewelers saw, remove that post from the body and then twist out the other post using the remaining rod.  Then soak the rod & post in penetrating oil and gradually work the rod out.  Reface the cut post and add a little silver solder to the cut hinge then reface that to fit between the posts - ream to fit the new rod.  I learned about this from a nice professional SaxProShop technician when the second problem arose.

I now have a joint mounting jig and cross slide vice for my drill press, so with the judicious use of a very small machinist jack that I will make from a screw, connecting nut and stop nut, I could attempt another drilling.  However, I'm concerned about the strength of the threads being tapped into silver solder/nickel-silver.  And of course, I might mess it up yet again.
Is it worth fixing? If so, any ideas of someone who could tackle the job, or of another approach.

« Last Edit: August 06, 2020, 10:14:59 AM by kewald »
Rank beginner at Clarinet and Alto Sax