Author: | E. Fisher |
Reviewer(s): | |
Editor(s): | S. Boehm, S. Frank |
Management Approval (Name, Title, Date): | B. Mills (Lab Officer) |
Audience: | Technicians |
Origination date: | 4/26/2013 |
Current version: | 7/30/2018 |
Revised: | |
Domain: | Thin Section Lab |
System: | Logitech LP50 |
Keywords: | Flattening Billets |
ntroduction
This user guide will help thin section technicians prepare billets for bonding to microscope sides. For more information refer to the Logitech Thin Rock Section Production manual, available in the Thin Section Lab both on a Logitech thumb drive in the bookcase and computer under the "Manual" folder on the desktop.
Figure 1
a. Place the billets around the outer edge of the ring (Fig. 2) with their number facing up. If there is a small billet it should be placed in the middle.
b. The billets should be all the same thickness. If not, add a filler rock on top to make it level with the others.
3. Fill in the empty space with filler rocks (Fig. 2).
a. All the rocks should fit loosely. Do not wedge them in.
Figure 2
Figure 3
5. Turn on the abrasive drum by overriding it and make sure it is dripping properly.
6. Reset timer and set it for 15 to 25 minutes, depending on how hard the samples are.
7.Check the plate speed, it should be set to 5rpms.
8. When the plate is wet press Start.
9. Increase the plate speed in increments to 58rpms.
10. After the time has elapsed remove the weight, stopper, pads, ring, filler rocks, and samples.
11. Clean the ring by wiping it down with a kimwipe and isopropyl alcohol.
12. Rinse and scrub the billets and filler rocks with a soft brush and warm water.
13. Place the billets lapped side up on the hot plate to dry. Spraying the billet with isopropyl alcohol will speed up the drying.
a. Hot plate should be set to 70 degrees C or 160 degrees F.
14. When finished the flat side of the sample should reflect light and feel smooth to touch (Fig. 5). If any parts look dull or feel rough it may need more time on the lap wheel.
Figure 5 (Logitech Thin Rock Section Production Manual)
3. When finished, the flat side of the billet should reflect light and feel smooth to touch (Fig. 5). If any parts look dull or feels rough, it may need more time sanding.
4. Wipe the billet clean with a kimwipe and isopropyl alcohol.
Original version created by Emily Fisher
4/26/2013