Post subject: Re: Where to find Dops with these dimensions
Posted: Thu Aug 06, 2020 1:04 pm
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Joined: Tue Apr 05, 2016 7:58 pm Posts: 1424 Location: San Marcos, CA
glhays wrote:
You can clean it by taking a smaller diameter rod wrapped with some 600 grit wet dry black sandpaper just large enough it fits spin it lightly not to much you only want to clean it not to make it out of round, just back the key out first.
Al, as stated completely. One would hope that cleaning is not re-surfacing.
Post subject: Re: Where to find Dops with these dimensions
Posted: Thu Aug 06, 2020 6:02 pm
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Joined: Thu Jan 24, 2008 4:01 pm Posts: 1902 Location: Pine City, NY and Dothan, AL
Yes, one would hope so. And I would make sure by not using an abrasive. It's not just a matter of keeping it round - if any material is removed, the dop will shift
Post subject: Re: Where to find Dops with these dimensions
Posted: Thu Aug 06, 2020 6:24 pm
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Joined: Thu May 12, 2016 2:18 am Posts: 1542
I am also gainst abrasives inside the quill. I just clean really well with alcohol, or acetone.
I am very fussy about cleaning dops really well before inserting into the quill. If the quill gets dirty, just that dirt will tend to abraid over time and you can lose tolerances from just that. I don't use oil or other lubes because dirt tends to stick to it.
Post subject: Re: Where to find Dops with these dimensions
Posted: Thu Aug 06, 2020 7:57 pm
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Joined: Tue Apr 05, 2016 7:58 pm Posts: 1424 Location: San Marcos, CA
I agree, but unfortunately the aluminum on the inside of these MDR quills after sitting with moisture, can buildup with heavy calcification, remember I am talking talking about 25-30+ year old MDR machines. If it is been well maintained one would hope, its moot. And if it already has calcified, corroded to a degree, each time the dop is inserted it is feasible it may be shifting in any case. These machines were not the most accurate machines from the start.
Post subject: Re: Where to find Dops with these dimensions
Posted: Thu Aug 06, 2020 9:42 pm
Gold Member
Joined: Thu Jan 24, 2008 4:01 pm Posts: 1902 Location: Pine City, NY and Dothan, AL
Didn't know these quills are aluminum. Not the best for longevity I agree about the importance of cleanliness. I clean dops with alcohol and a Kimwipe before inserting them.
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