megs sanding/finishing discs

[jamores23]

why is there "for sanding discs" only 320/500/800/ and 1500 grit but for "finishing discs" there is only 1000/3000. My question is, What would the difference between the "sanding disc" 1500 grit and a "finishing disc" 1000 grit be. Obviously the grit is different but why is one called a finishing disc and the other a sanding disc. Is it fine to go from 1000 grit "finishing disc" to 3000 grit "finishing disc" also, I see that the megs discs dont start cutting immediately it has to "BREAK IN" compared to the 3m discs that cut immediately . How would you break it in or would the 3m pads be a better choice?

 

[Flash Gordon]

why is there "for sanding discs" only 320/500/800/ and 1500 grit but for "finishing discs" there is only 1000/3000. My question is, What would the difference between the "sanding disc" 1500 grit and a "finishing disc" 1000 grit be. Obviously the grit is different but why is one called a finishing disc and the other a sanding disc. Is it fine to go from 1000 grit "finishing disc" to 3000 grit "finishing disc" also, I see that the megs discs dont start cutting immediately it has to "BREAK IN" compared to the 3m discs that cut immediately . How would you break it in or would the 3m pads be a better choice?

I see more then 1 question you have asked here. I'll do my best to explain...

First off, your never going to want to dip below 1000 if your just doing detail work. If you were to use 1000, your next step would be to use 1500, then 2000, then 3000. Each step helps remove the sanding marks left from the previous steps

3M/Meguiars...I see little difference in either of them. It seems your more comfortable with the 3M, so thats the route I would go if I were you

Oh, and the difference in 1500 and 1000 would be 500

 

[PorscheGuy997]

What would the difference between the "sanding disc" and a "finishing disc?"

There are two different types of abrasives systems used for the Unigrit sanding disks.

The sanding disks are referred to as a film disk. They are very thin, with no interface or extra foam padding in between the velcro and the abrasive surface. If you look close, there are tons of small pyramids. These are used for initial surface leveling when combined with a thin interface pad. The interface pad will absorb some of the orbit.

A finishing disk has a different style of abrasive surface, along with a thin foam backing.

I find that the 1500 sanding disks followed with a 3000 finishing disk will level very efficiently and leave an even surface.

 

[jamores23]

lol flash i know that you would climb up the ladder but if you take a close look at the discs they dont have 2000 grit discs.... they have a "sanding disc" 1500 grit and a "finishing disc" 1000 grit. wouldnt it be vice versa 1000 grit sanding and 1500 finishing...

 

[jamores23]

so porsche, the sanding disc wouldnt use the recommended foam piece that goes onto the backing plate and then the disc goes onto the foam center piece?

 

[PorscheGuy997]

I still use some sort of interface pad with the sanding disks just to allow the disk to contour a bit more.

The main interface I use is 3/8" thick and not very stiff. There are tons of others available to make it easier to sand near curves and tighter spots.

 

[C. Charles Hahn]

I still use some sort of interface pad with the sanding disks just to allow the disk to contour a bit more.

The main interface I use is 3/8" thick and not very stiff. There are tons of others available to make it easier to sand near curves and tighter spots.

:iagree: