LAPPING SANDPAPER OR DMT?

**tavli** · 03-08-2010, 06:27 PM

I previously always lapped with DMT 325 then 1200 in the sink. I thought I would try sandpaper. I got good quality 400 and 600 and used both also in the sink on a slab of smooth granite. I seem to get a far better result with sandpaper. I would be interested in other members' views.

**welshwizard** · 03-08-2010, 06:46 PM

Do you mean wet or dry paper (silicon carbide) or actual sand-paper?
In the UK woodworker's glass-paper is commonly referred to as sand-paper.

**tavli** · 03-08-2010, 07:45 PM

Glasspaper the same smooth stuff that panelbeaters use.

**holli4pirating** · 03-08-2010, 11:12 PM

What do you mean by "better results" and what hones were you lapping?

**JimmyHAD** · 03-09-2010, 04:41 AM

Originally Posted by holli4pirating

What do you mean by "better results" and what hones were you lapping?

A good question. To the OP, it is now a known fact that using a DMT 1200 for lapping waterstones will ruin the plate sooner than later. How soon depends on what and how much you're lapping with it. Could that account for your lesser results with the diamond plates ?

**Soilarch** · 03-09-2010, 04:59 AM

I'm curious as to "what stones" also.

I've always used a DMT8C or DMT8XC on my Shapton Glasstones. If by "better results" you mean a smoother surface that can be fixed. It's late, and shaptons are kinda different so my experience won't be much help unless thats what you're using.

I like the DMT.

...and to what JimmyHad...Yep, my DMT8C is needs replacing...and it's been less than a year. ("Diamonds Last Forever",

)

**PhatMan** · 03-09-2010, 07:41 AM

Tavli,

Currently I use 400/600 grit silicon carbide paper with my Nortons & Naniwas.

This is mainly because I can't get a suitable DMT plate in the UK

;

I am going to order one from SRD

Have fun !

regards

Russ

**tavli** · 03-09-2010, 08:02 AM

The stones are all Naniwa 1 - 12K. the 'better' result is that the sandpaper seems to give a slightly smoother finish.

**welshwizard** · 03-09-2010, 08:59 AM

Originally Posted by PhatMan

This is mainly because I can't get a suitable DMT plate in the UK ;

This company sell DMT in the UK, there are a few others as well.

Beesleys Tool Shop Bench Stones

**Stubear** · 03-09-2010, 09:12 AM

I heard that sandpaper can leave grit embedded in the surface of the hone, which is why I sprung for the DMT 325. I also like the fact that I can use the DMT for major edge repair as well!

I'm not sure how often sandpaper leaves grit, or even if it does, as I dont use it, but the warning was enough...!

Has anyone found that this happens?

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