Post by jerm on May 3, 2023 20:38:54 GMT 12
I sold one of Dad's tonearms (FR-12) to a guy, he ended up commissioning me to build a turntable plinth for it.
I don't know anything about Lenco Turntables but I believe this is a Lenco 'SLAT' L75/L78.
I was handed a piece of 12,000 year old swamp kauri, a Corian off-cut and some plate motor mounts.
His idea was to sandwich the kauri with Corian on the top and bottom but the rest of the engineering was up to me.
The tricky bit was that the kauri had already been cut to finished size and there were no digital files for the plate geometry, only a rough hand drawn drawing.
After some reverse engineering / trial and error I ended up with a CAD model of the plates and the top layer of Corian. I wanted to recess the plates for a cleaner look, but this made it much more difficult as the recess needs to fit perfectly around the mounting plates to make it look nice.
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I CNC cut a prototype in some scrap melamine plywood I had on hand.
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Video here: imgur.com/2VRTqTJ
I made some minor adjustments and loaded up the Corian.
This stuff cuts really nicely.
The perfect job for my tapping stand, it's always slightly nerve-racking when you can't afford to mess-up any of the holes. This tool makes tapping much easier. I used stainless steel M4 button head screws to fasten the mounting plates.
Unfortunately I don't have any photos of the finished turntable but apparently it is set up and running well.
I'm very happy with how this turned out. It was my first time working with Corian, it's a nice material that machines well I'm already thinking about what projects I could use it for in the future.
I don't know anything about Lenco Turntables but I believe this is a Lenco 'SLAT' L75/L78.
I was handed a piece of 12,000 year old swamp kauri, a Corian off-cut and some plate motor mounts.
His idea was to sandwich the kauri with Corian on the top and bottom but the rest of the engineering was up to me.
The tricky bit was that the kauri had already been cut to finished size and there were no digital files for the plate geometry, only a rough hand drawn drawing.
After some reverse engineering / trial and error I ended up with a CAD model of the plates and the top layer of Corian. I wanted to recess the plates for a cleaner look, but this made it much more difficult as the recess needs to fit perfectly around the mounting plates to make it look nice.
I CNC cut a prototype in some scrap melamine plywood I had on hand.
Video here: imgur.com/2VRTqTJ
I made some minor adjustments and loaded up the Corian.
This stuff cuts really nicely.
The perfect job for my tapping stand, it's always slightly nerve-racking when you can't afford to mess-up any of the holes. This tool makes tapping much easier. I used stainless steel M4 button head screws to fasten the mounting plates.
Unfortunately I don't have any photos of the finished turntable but apparently it is set up and running well.
I'm very happy with how this turned out. It was my first time working with Corian, it's a nice material that machines well I'm already thinking about what projects I could use it for in the future.
