Re: Cutting a window

On Thu, 15 Dec 2005 04:29:58 GMT, Bill Schwab
<bschwab@xxxxxxxxxxxxx> wrote:
>> I don't know your overall sizes, but I have had good results
>> using magnetic base dial drop indicators and ignoring the dials.
>> I have three bases (2) 1 inch and (1) 2 inch indicators which I
>> use on both the Emco lathe and mill. My eyes are starting to go
>> and the dials are much easier to read. They also eliminate the
>> backlash problem and can show you how much things shift when you
>> tighten the clamps. Also is real eye opener when you lean on
>> the machine.
>> Poor man's digital readout.
===================
>One of these days I will weaken and buy a couple of 2 inch (bigger if I
>can get cheap ones) plunge indicators to play around with this idea.
>Dumb question: where/how do you mount the indicators? Do you do
>anything special to protect them from chips and oil?
>Bill
==================
I find the standard jointed dial indicator holder to be minimally
useful in this situation.

I have several indicators with the magnetic back. Use the for 2
of the axis and as a lathe "stop"

Also bought 2 of the mightymag holders -- use these to mount my 2
inch stroke holder. With a set of 123 blocks I can get good
accuracy up to 5 inches which is all I ever needed so far.

No particular care taken to keep oil out but several indicators
do have oil inside.

I use the PRC Enco indicators for this. Can't tell any
difference between then and my B&S/Mitutoyo drop indicators
except these feel a little more "gritty." Top quality indicators
may be better in a production environment.

Watch the Enco sales fliers. Get the indicator/mightymag copy
and a set of contact points for less than 15$. Your choice of
black or white dial.

Uncle George
.

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