Steve,
Thanks for the comments.
I will say this, let me revise your tech talk. Plastics are hardly ram extruded. The extrusion process used to manufacture plastics is called continuous screw extrusion. The plastic pellets are in a hopper above the feed throat of the extruder. The extrusion screw turns at roughly 75-150 RPM. The feed screw has three sections, a feed section a transition section and a metering section. As the pellets are fed through the screw they start to melt due to shear and the added heat of heaters along the extrusion barrel. By the time they get to the end of the extruder they are at a very high pressure, 6500-10000 PSI. They are then fed through the die, in this case, a good die good produces a very accurate profile. Profile extrusion is very common, from small pieces to very large pieces like replacement window frames. V or L shapes are done routinely and the dies are not very complex. the take off equipment, the cooling tank, puller and cutter are a different story.
I am the most talented extrusion designer that is not employed in the plastics industry at the moment.
JV
some pvc extrusions
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and an extrusion line
http://www.plasticextrudermachinery.com/image/ss1.jpg
Joe,
Right you are! I was actually just trying not to use a lot of tech talk and simplify the explanation. If you notice, I have "screw" after the "ram" on my sketch, but figured people would understand "ram" better. I also left out the explanation about feed zones versus decompression zones and the conversion of rotational memory into longitudinal memory, etc., for the same reason... :wink:
The reason I explained basic extrusion is that the piece of vinyl I could see under the points was triangular and appeared to be routed out like a "cup" in the middle, which to the best of my limited experience can't be done with a one step extrusion process. Maybe things have changed since I left the plastic industry. I spent twenty five years in the business, but the new innovations were getting pretty wild near the end of my career, so I'm always curious about new technology.
Who were you with when you were in plastics, Joe? I was with Central Plastics, Regal, and Quality Industrial Products (Quality Gasket & Rubber). Small world isn't it?
I love old Palmers and this cue is very unique. Thanks for sharing!
Steve
Wow, that's some amazing work there! I've been considering having him do some work, now I'm convinced!
Fantastic cue!
I've never seen one quite like it.
They may be called WICO blanks now, but Bob Meucci was making them at BMC cues before WICO. According to Peter Balner, Palmer bought a hundred or two of these blanks directly from Bog Meucci at BMC cues and it was around 1968 or so - WICO had nothing to do with the purchase at that time. I've learned that memory for exact year going this far back is unreliable.
Palmer was always looking for a reliable source of ebony pronged veneered cues. They stopped using these blanks because they did not think the vinyl veneered cues would be durable over time.
I've only seen a few Palmers with these vinyl points - I wonder how many survived?
Of special notice on the picture above is the shape of the vinyl piece where the ebony prong broke out - notice the vinyl is molded or extruded in a shape to accommodate the ebony prong.
Chris
Chris
Pre-WICO WICO, OK I guess you do know just a little something about cues. Nice post.
Kevin