Re: Trepanning and Parting Off - Loose Gibs Chatter Chips

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Re: Trepanning and Parting Off - Loose Gibs Chatter Chips Wes 05-04-2008
Posted by Nick Mueller on May 5, 2008, 10:51 am
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 Wes wrote:

> I believe I have Moglice Semi but I was told it will droop if I don't spin
> it.

The semi will certainly droop. It is still quite soft even after 8 hours.


> The roughed up surfaces will be coated turned to slide in the mating
> sheaves bores.

Be sure to first rub in a thin layer and then the rest on top of that.
Calculate at least 50% loss, you won't be able to distribute it evenly and
controlled enough.


Nick
--
The lowcost-DRO:
<http://www.yadro.de>

Posted by Wes on May 5, 2008, 5:51 pm
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>he semi will certainly droop. It is still quite soft even after 8 hours.
>

I was planning on spinning by hand until some one told me the cure time is
long.

>
>> The roughed up surfaces will be coated turned to slide in the mating
>> sheaves bores.
>
>Be sure to first rub in a thin layer and then the rest on top of that.
>Calculate at least 50% loss, you won't be able to distribute it evenly and
>controlled enough.

Getting a nice forced coat into the roughing sounds like an excellent idea.

Thanks,

Wes


Posted by Nick Mueller on May 5, 2008, 7:53 pm
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Wes wrote:

> I was planning on spinning by hand until some one told me the cure time is
> long.

Put it in the oven. :-)
I once must have gotten the mixture wrong (not enough hardener) and it still
was soft after two days. As I didn't want to start all over again, I cured
it at 50°C for 4 hours. That fixed the problem. :-)

You'll also need a high resolution scale. Mine has 0,1 g, the 0,5g is
useless. Because I often only needed 20g or so (about 10ccm, IIRC). 1mm of
thickness of the coating is enough and saves some money.


Nick
--
The lowcost-DRO:
<http://www.yadro.de>

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