FROSTING SLIDES: USER GUIDE
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Author: | E. Fisher |
Reviewer(s): |
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Editor(s): | T. Bronk, G. Matson, M. Knight |
Management Approval (Name, Title, Date): | B. Mills (Lab Officer) |
Audience: | Technicians |
Origination date: | 4/28/2013 |
Current version: | 4/28/2013 |
Revised: |
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Domain: | Thin Section Lab |
System: | Logitech LP50 |
Keywords: | Frosting Slides |
INTRODUCTION
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- Connect vacuum hose to the right forward vacuum plugin (Fig. 3).
Figure 3
- Check oil level in the vacuum pump under the counter.
- Turn on vacuum pump with the button labeled Vacuum under the joystick on the LP50.
- Close valve to the left of the vacuum gauge (Fig. 4).
- The vacuum is less than 150mbar (Fig. 4). It should be in the green portion of the gauge.
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Vacuum ValveExhaust FlapVacuum Gauge
Figure 4
- If there is not a proper vacuum seal right away try pressing lightly on the slides to help them seal and make sure the exhaust flap (Fig. 4) is clean.
- If that does not work, take off the slides and clean them and chuck face again.
- Gently set the jig upright on the lapping plate, in the forward arm (Fig. 5).
- The plate monitor can stay in place on the back arm (Fig. 5).
Figure 5
- Turn on the abrasive drum by overriding and make sure it is dripping properly.
- Reset the timer and set it to 18
minutes.Anchor _GoBack _GoBack - Set the plate speed to 5 rpms.
- When the plate is wet press Start.
- Increase the plate speed in increments to 58 rpms.
- The jig should start to spin after a couple of minutes when all the slides even out to the same thickness.
- Bungee cords can be added to the vacuum hose to assist in helping the jig spin (Fig. 5).
- Do not walk out of the lab as the LP 50 is running.
- When time is up, press Stop.
- It is best to bring the speed back down to 5 rpms after the lapping plate is stopped, to help prevent starting it back up at a high speed.
- Take the jig off of the plate carefully.
- Open vacuum valve and turn it off.
- Place jig chuck face up in the sink (Fig. 6).
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- Hold the micrometer with your pinkie and ring finger through the "C" part of the micrometer. Your index finger and thumb will move the dial (Fig. 7).
Figure 7
- Clean the micrometer before use by placing a piece of paper in between the two bars and closing it gently (do not apply force). Pull the paper out and repeat.
- Gently close the micrometer all the way gently. It should read zero.
- Place the slide in between the two bars and close them gently onto the slide (Fig. 8).
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- Take a measurement at the middle and sides to make sure that the frosted slide is even all the way across.
- Uneven slides will cause your sample to be uneven. If this happens put the slide back onto the jig and lap it down longer until it is even.
- Organize the frosted slides into groups based on slide thickness (Fig. 9).
Figure 9