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3m microfinishing film


#1

Hello all and happy Valentines day…

Here is what I am dealing with, please advise…

I have a Power Hone

600 grit wheel (came with the power hone)
Ceramic wheel (newly purchased)

To save money (not so smart I think) I purchased…

2 GRS plain 5" wheels
3M 100 micron self adhesive finishing film
3M 60 micron self adhesive finishing film

Question in which order do I use all of these grits now?

Do I start with the 100 micron go to the 60 micron then the 600 grit
and finally the ceramic?

Should I have just bitten the bullet and purchased the 260 and 1200
grits to go with the 600 and ceramic wheels?

Thank you for any advise
Laurie


#2
Question in which order do I use all of these grits now? 

Laurie - I don’t have a power hone, but abrasives are abrasives…
The ones that say “grit” are finer the bigger the number is. So 240
grit is rougher than 600 grit. The microns are the size of the
particles, so the big numbers are coarser than the small numbers -
100 micron is rougher than 60 micron. You want to start rough and go
finer, so: 240 grit, 600 grit, 100 micron, 60 micron.

http://www.donivanandmaggiora.com


#3

I purchesed a GRS Graver Mach this last December.

I ordered three 5" alum. blank disks from Rio Grand.

I bought one pack of 500 and a 1200 dimond Microfinishing film stick
on pads.

I will use the other blank wor 8000 grit to finish the final polish
of my GRS Q Change gravers.

I have a Old MDR faceting lap so I made a two leg table platrorm
that stradeled the MDR center rail. I milled the top after I bolted
the legs onto the platform. I have just finished sharpening about 17
ingravers. I bought GRS dual angle sharprning Fixture and a index
fixture that fits intothe Sharpening fixture ao now I can load the
graver and it indexes every time.

I hope this helps you.
Yours: Billy S. Bates royalminiatures.com


#4

I have a chart that compares micron vs grit vs mesh abrasive sizes.
It is approximate, but instructive. Anyone desiring a copy, just
e-mail me off list. Alternatively, if there is a method to post that
attachment to a place here where it can be retrieved, please
explain…

For those who don’t know, the smaller the GRIT number, the COARSER
the grit. Micron size is a direct measurement of the size of the
particles, so the smaller that number, the smaller the grit.

Example: 180 grit is coarser than 600 grit. 50 microns is larger
than 1/2 micron.

Wayne Emery


#5
Question in which order do I use all of these grits now? 
Do I start with the 100 micron go to the 60 micron then the 600
grit and finally the ceramic? 
Should I have just bitten the bullet and purchased the 260 and 1200
grits to go with the 600 and ceramic wheels? 

We get asked these questions all the time so below I have pasted a
handy chart that will give you the order and you can convert whether
you are using grit or Micron. Using this chart to answer the question
directly, your initial sequence is correct.

As you can see by the chart, the 1200 grit is a completely different
animal than the rest. The other grades you mention are coarse and
pre-polishing grades. The 1200 grit starts to get into polishing. To
clarify, the bottom of this chart are grits and microns for coarse
removal and the top of the chart is for high polishing. By the way,
adding more steps gives much more depth to the final polish–on the
other hand it takes more time and material to add more steps.

Please feel free call us if you want me to clarify verbally.

Grit 	Micron
100,000		 1/4
60,000		 1/2
14,000	 	 1
13,000		 1.5
9,000		 2.5
8,000		 3
5,000		 4
4,500		 5
2,800		 7
1,800		 9
1,400		 14
1,200		 15
1,050		 18
800		 25
600		 30
500		 35
325		 45
285		 55
240		 70
225		 90
160		 110
100		 150

Michael McKinnon
McKinnon Global, LLC.
1-800-452-4816
www.mckinnonglobal.com