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Mike's Comments:
After I finished my previous project "New
life for a 55 year old Thorens TD-124" you can find out about it here:
Link
I realized that I really want to make a turntable with two
tonearms. Although I had a second Thorens TD-124, it was not suitable
for this purpose,
because the cartridge of the second tonearm
passed over the Thorens TD-124 magnetic brake magnet. So I decided to
use Garrard.
After analyzing the prices on the market, I chose
the 401 model, which could not only be bought cheaper than the 301,
but had a number of advantages: a built-in strobe, an improved
motor, and a modified external design.
After a short hunt on ebay
in England, I was able to buy a Garrard 401 in very good condition and
at an affordable price,
so I could start designing a plinth for
two tonearms.
I had two tonearms, the first is the legendary SME
3012 MKII and the second is one of the best vintage Japanese tonearms
Sony PUA – 286.
I decided that the plinth would be made of 8
layers of 16mm birch ply and after a long consideration of the design,
the draft on paper was ready.
Now it was necessary to transfer it
to a computer program understandable by the CNC machine.
My old
friend Igor helped me transfer my draft into machine language, and now I
only had to find a workshop to do the work.
Unfortunately,
COVID-19 changed my plans somewhat and delayed the completion of the
project by half a year.
But even this delay was not in vain.
During this time, I have prepared all the necessary parts and materials.
In September I found a workshop with the necessary СNC machines and
on 24.09 the work was finished.
So I had everything I needed for
my new project and I immediately got to work.
All the work took
two weeks and I can report the successful completion of the project.
Detail:
Plinth builds are from 8 layers of 16mm birch ply
Сut
on CNC machine
Сovered with walnut veneer and oil-based varnish
Specially made two-layer leg-insulators
Plinth Dimensions (W x H x D)
655x130x490 mm
Plinth Weight with the legs is 25kg
The tonearm arm
boards made of 10 mm thick aluminum alloy.
Motor and bearing
restored.
First tonearm is SME 3012 MKII with Ortofon MC-30 Super
cartridge.
Second tonearm is Sony PUA – 286 with Supex 900 Super
cartridge.
All the work was done by me at home.
Thank you,
Michael