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Old 20th March 2008, 01:17 PM   #1
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Default My DIY turntable.

I thought I'd post some pics of my turntable. I had a collection of bits off an old Mission 775 which have been kicking around in my workshop for a few years so I decided to make some use of them. The bearing in the hub needed sorting so a friend made some new ones and fitted them for me and made some bits for the Grace arm which now sports a Hadcock headshell.

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These are the original Mission parts. New bearing is installed.

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Original idea was to make it in three sections out of perspex and this was the trial version in mdf.

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However I decided to go with a more coventional build and put two sections in a plinth with sorbothane damping between each layer.

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Second section with cutout for the arm base and lead.

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Top section with Grace arm with original headshell removed.

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Hadcock headshell fitted to the Grace arm.

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Geometry is a mile out!

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I made the mounting hole for the arm into a slot so I could bring it forward.

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Looks good now.

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It sounds very good indeed but I would say that I suppose! I hope to make my own arm soon.
Si.
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Old 20th March 2008, 02:24 PM   #2
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nicely done!
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Old 20th March 2008, 02:38 PM   #3
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Quote:
Originally posted by shallbehealed
nicely done!
Thanks.
Next step is to make the two sections out of acrylic and do a comparison with the mdf sections. This deck sits where my Linn Sondek used to be. After listening to maybe a dozen lp sides I have no plans to put the Linn back.

Si.
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Old 20th March 2008, 05:59 PM   #4
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Very nice job !
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Old 20th March 2008, 11:59 PM   #5
Nanook is offline Nanook  Canada
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Default hardwoodspark,

very nice turntable. What did you use as a source for sorbothane?

Interesting how many folks have no intention of putting BRAND xxx back once their new DIY table is built and making music.

I think more a quality of materials available to the average Joe vs. what was available even just a few years ago to manufacturers.

Did I say how nice your turntable looks (in a traditional way, which I think is good).


stew.
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Old 21st March 2008, 03:15 AM   #6
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Thanks Stew.
I was initially going to use three layers of acrylic in an open design and I did a mock up using mdf. The idea was then to send the mdf away and have the acrylic made from these templates. However, partway through, I decided I'd rather have a more trad looking tt. So I made the plinth and used just the top two sections. I'm very happy with the result but I'm still going to make some acrylic sections just out of curiosity. Lets face it, a lot of us here get as much pleasure making our gear as we do listening to it!
The sorbothane decouplers are Flat Feet Ultras. Sold on Ebay in two sizes depending on the weight of your equipment. My aim was to achieve the isolation of a suspended deck with the solidity of a non suspended design. The isolation properties are not as good as they could be but I'm quite happy with the result. It's a compromise at the end of the day and we have to live with that.

Si.
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Old 21st March 2008, 08:45 AM   #7
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Hello,

could you please tell me where you found a Hadcock headshell.
I have a Grace 707 and would like to replace the original plastic headshell by a good one

Thanks

Pascal
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Old 21st March 2008, 10:00 AM   #8
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Hi Pascal.

I got mine here:http://www.needles-and-spins.co.uk/default.cfm

Si.
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Old 21st March 2008, 10:07 AM   #9
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Pascal, the plastic headshell is tricky to remove. It's glued as well as screwed. I used a soldering iron to melt the plastic where it joined the tube. I cleaned the glue off with nail varnish remover. You will need to extend the leads slightly. The Hadcock headshell is a touch slack on the tube despite the fact that the Hadcock arm is also 6mm. However it tightens down ok. Oh and bear in mind that there are no slots in the headshell. You adjust the geometry by sliding the headshell back and forward. You may have to reposition the arm slightly as I had to. I think it's worth the effort though.

Good luck, Si.
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Old 21st March 2008, 12:02 PM   #10
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harwoodspark,
I am curious to know what`s the greatest diference btw the sprung
linn and your DIY sorbothane decoupled mission in terms of sound qualities?
And right now I am on the way of DIY Linn(having the used linn`s parts except the plinth),and your project gives some ideas in which I
would like to try if the end result is as described.

Complimenti!
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