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Teres platter options
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Old 14th September 2018, 08:27 PM   #71
Seth Hensel is offline Seth Hensel  United States
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Teres platter options
Doing the math, (dont have a capable scale) I’m very close to 35 lbs right now with no shot. The copper platen alone is 11.235 lbs
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Old 14th September 2018, 09:10 PM   #72
TomWh is offline TomWh  United States
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You do have the copper top. How thick is the platter? The outside is most important. Not sure hole size, how many, and how deep. How much does weigh now?

You should be able to do the math for a close total weight. Subtract the removed aluminum weight then add the lead weight and your home.

Tom
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Old 14th September 2018, 09:56 PM   #73
AuroraB is offline AuroraB  Norway
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Location: Norway, -north of the moral circle..
Not sure about the proper english word or name, but there used to be something we locally call "lead sand" - used in chem labs for ballast weighting... ??
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Old 14th September 2018, 11:52 PM   #74
TomWh is offline TomWh  United States
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Hey Seth are the holes already drilled? If they are you could put lead shot in plastic bag and fill hole. Then pull it out and weight it, then multiply. This would save you the time of figuring volume. Forgot how much Chris said the bearing/ ball pad can take.

Tom
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Old 15th September 2018, 12:14 AM   #75
Seth Hensel is offline Seth Hensel  United States
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Teres platter options
Oh yes. The holes are machined. I’d post pics but its such a pain on this platform. We used to have a gallery one could link to but apparently that’s gone. I in fact did the maths on the weight. How i got to 35 lbs +- a couple of ounces
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Old 15th September 2018, 01:06 AM   #76
TomWh is offline TomWh  United States
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For pictures hit advanced post at bottom then hit attachments. Then hit top one should bring up camera Docs etc.
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Old 15th September 2018, 01:22 AM   #77
Seth Hensel is offline Seth Hensel  United States
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Teres platter options
517E64C0-CD8F-4280-AE56-B8CECE76F7E5.jpg

5DDE8245-A5D5-4226-B7D6-2C89EB1CD830.jpg

The holes are 2.00 inches x 2.25 inches deep
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Old 15th September 2018, 09:10 PM   #78
InSides is offline InSides
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Wow. Looks excellent. Remember to lift with your knees when picking up the platter.

Any avenues on surface finish? I take it the copper will tarnish over time?
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Old 15th September 2018, 09:17 PM   #79
Seth Hensel is offline Seth Hensel  United States
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Teres platter options
I was advised to use latex gloves when handling the copper platen. Once it is bonded to the aluminum it will be lacquered it I think. Per TomWh I will be using a mat.
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Old 15th September 2018, 09:35 PM   #80
InSides is offline InSides
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Interesting.

I have been struggling with finishing options - my approach uses a combination of POM (Delrin) and Aluminium. Delrin is relatively easy to clean using isopropyl, but the aluminium platter, even when anodized, can sometimes "stain".

It turns out that the bearing oil I've found most success with (in my approach) is slightly alkaline, and that dissolves the oxide layer causing the "staining". Apparently I have trouble wiping the oil from my fingers before handling the platter.

Lacquering would be an interesting approach, but won't that chip?
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