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- Clean six unfrosted slides by washing them with hot water and wiping them off with a kimwipe and isopropyl alcohol. Then blow dry with the air gun.
- If slides are stuck together, let them soak in hot water. They should separate easily after a day.
- Set the clean slides on the jig's chuck face over the vacuum grooves. There should be no spaces between any of the sides (Fig. 2).
- If there are spaces the vacuum will not seal properly.
Figure 2
3. Connect vacuum hose to the right forward vacuum plugin (Fig. 3).
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7. The vacuum is less than 150mbar (Fig. 4). It should be in the green portion of the gauge.
Vacuum ValveExhaust FlapVacuum Gauge 
Figure 
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.
8. Gently set the jig upright on the lapping plate, in the forward arm (Fig. 5).
9. The plate monitor can stay in place on the back arm (Fig. 5).
Figure 5
10. Turn on the abrasive drum by overriding and make sure it is dripping properly.
11. Reset the timer and set it to
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18 minutes.
12. Set the plate speed to 5 rpms.
13. When the plate is wet press Start.
14. Increase the plate speed in increments to 58 rpms.
15. The jig should start to spin after a couple of minutes when all the slides even out to the same thickness.
a.Bungee cords can be added to the vacuum hose to assist in helping the jig spin (Fig. 5).
b. Do not walk out of the lab as the LP 50 is running.
16. When time is up, press Stop.
a. 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.
17. Take the jig off of the plate carefully.
18. Open vacuum valve and turn it off.
19. Place jig chuck face up in the sink (Fig. 6).
Figure 6
20. Scrub the jig and slides gently with a soft brush to break the vacuum seal.
21. Wash the frosted slides with warm water and blow dry with the air gun. Then, clean them with a kimwipe and isopropyl alcohol.
22. Clean the jig by scrubbing it down with warm water and a soft brush. Then blow through the jig and on the chuck face with the air gun.
MEASURING FROSTED SLIDES
- 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
2. 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.
3. Place the slide in between the two bars and close them gently onto the slide (Fig. 8).
Figure 8
(This slide is "16")
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