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- Set the billets flattened side up on heat pad and spray them with isopropyl alcohol. This will help them dry.
- Clean frosted slides off with isopropyl alcohol, blow them dry, and measure them again.
a. It is best to have them all the same thickness for the billet group that are being bonded.
b. Take note of how thick the slides are and write it on the sample tray. The samples will need to be 30 microns on top
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of the slide thickness.
3. Place the slides on the heat pad as well.
MIXING RESIN
- Mix one full pump of EpoTek 301 part A and part B into a weighing dish.
- The ratio is 3 to 1. The pumps are preset to this.
- Make sure pump is primed first or there will not be the right ratio.
- Stir the resin slowly with wooden stick until there are no trails of the two mixing (Fig. 1) and go slow to avoid bubbles.
Figure 1
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Make sure no wooden splinters fall into the resin; pick them out if they do.
The resin should stay good for about 45 minutes. If it starts to get gooey, place on the hot plate for a few seconds and it will become runny again for a very short time.
PUTTING RESIN ON THE BILLETS
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- Once the samples are completely dry clean the surface off with a kimwipe and isopropyl alcohol.
- Place the billet on a Teflon puck.
- With the wooden stick slowly draw an X with the resin on the sample (Fig. 2).
Figure 2
a. If the first stroke is discolored it means the resin is soaking in the vesicles.
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This is one way to tell if surface impregnation is needed.
4. Spread the resin around so it covers the whole sample.
5. Let it sit for a minute or two and watch if any bubbles form.
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If there are bubbles get them out with the metal point tool (Fig. 3).
Figure 3
SURFACE IMPREGNATION
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