The QCC

Rugose Coral, Mississippian Period, Sulphur, Indiana.

9 posts in this topic

Nice!

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Nice work :wub:

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very,very nice.

 

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:dinothumb:

It is like a fireworks show picture!! Love it.

Thanks for sharing.

Tony

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Your pictures should appear in textbooks! :trex:

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This is really excellent!  Is anyone else cutting thin sections of fossils?  I would very much like to learn the older methods of thin-sectioning with hand tools, as it is unlikely that I will ever be able to have sufficient space for lapidary equipment.  It is essential to have thin sections if one hopes to identify fusulinids or bryozoans, hence my interest.

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Making thin sections by hand using a lapping plate, powdered grit, sheet grit and polishing compound takes almost as much space and more money per slide than a hybrid system.

I started out that way buying my supplies from Lee Valley Tools and quickly became a first name customer at the Lee Valley store.

 

My hybrid system consists of a glass lapping plate, a Hi Tech Diamond 6" flat lap machine and six diamond grit discs. The Hi Tech machine comes with three backing plates, a 180 grit "carving" disc,  600 & 1200 grit polishing discs, a small container of 1 micron diamond paste and polishing disc. I added  100 and 2000 grit  diamond discs. I still do a final 1 micron polish by hand on the lapping plate.

Space wise, a small work bench (30" x 48") is sufficient.

I managed to make about 12 slides using the manual method and over 120 with the hybrid system in much less time and at a lower cost per slide.

The photos show my manual method and the HiTech lap machine. Did I forget to mention the manual method is messy.

 

The lapping plate in a roasting pan with  sheet grit.

IMG_0179.jpg

 

IMG_0176.jpg

 

The slide carrier I made to hold the slide while polishing.

IMG_0208.jpg

 

The Hi Tech Diamond flat lap machine.

P1010711.jpg

1 person finds this informative

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Yeah, I want one of these.

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