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Hey there, just got a D8C and tried to lap my naniwa and I did a couple of circles, lifted up the plate and it had left a massive score on the naniwa!
after inspecting the plate closely I found two tiny bits sticking out, about 0.10-0.20 of a mm. Would this be covered under warranty? and will I be able to send it back?
thanks guys
Alex
It is recommended to take a plane blade or something like it, wet the plate, couple drops of dish soap, rub it down well. I didn't have a plane blade so I used the shaft of a long, heavy , screwdriver. They call this breaking the plate in. Make sure you go over the edges of the diamond side too to get rid of any divots.
So would I take the screwdriver and scrape it up and down the plate like I would a straight razor?
Some back and forth strokes will do just fine. You just want to knock down those high spots, and like Jimmy said don't forget to do the edges as well.
Yes, lay the shaft flat. The plate is very rough before it is used. You notice a significant change in smoothness when it is broken in.
BTW, if you do have a problem with the DMT, be prepared for a long wait. They claim "the best warranty" on the box, but I have found it to be deplorable. I had a defective plate and sent it back to DMT rather than get a refund/replacement from the vendor. They received it in May and I have yet to recieve the replacement. I've called their "customer service" and could not believe the answers I was getting. From "it is sitting here, we haven't had a chance to look at it" to "we are in short supply of plates and are sending them to vendors first rather than replace warranty items". Sheesh!
Hmmm... that sounds frightening, I think I'll try and smooth it out before using the warranty. Thanks for the help guys
I've got a feeling this is gonna take a while to knock this little bit off, at least two hours and even then I don't know. does anyone know how long it usually takes to get rid of these little bumps in the plate?
thanks Alex
Uh oh, that doesn't sound right. Can you take a pic?
Normally, the packaging informs you that you need to break in the plate before using it, for example with a plane blade or knife.Quote:
Originally Posted by gimpyalex
http://img135.imageshack.us/img135/8584/p1000817v.jpg]
that little shink of light you see there is the bump, like a little wart. they are quite small but enough to scratch my naniwa :( The next picture is in the exact same position as this one except I used the loupe on it - just to give you a sense of scale.
http://img708.imageshack.us/img708/9199/p1000818q.jpg
and the other bump which is smaller...
http://img685.imageshack.us/img685/854/p1000820s.jpg
hope I've got all the pics and descriptions right... I've never had a D8C before so don't know about any of this stuff. I know its supposed to be flat... that's it
more pics:
http://img839.imageshack.us/img839/6533/p1000822t.jpg
tried to get it a bit clearer.
http://img232.imageshack.us/img232/1371/p1000823a.jpg
Ho wmuch pressure do you use?Quote:
Originally Posted by gimpyalex
you are expected to use fairly strong pressure when doing this. I don't know how much pressure you use, but if you are just using the weight of the thing you are scraping, then it is going to take ages.
They're flat, but there can be singular diamonds sticking out. Scraping a blade over the surface with a good bit of pressure will break away those protrusions.Quote:
Originally Posted by gimpyalex
Phew, thought I was going to be in a warranty battle for a minute there, I've already shined up one side of a screwdriver, I'll try again with alot more pressure and post back.
cheers Alex
:)Quote:
Originally Posted by gimpyalex
The idea is that breaking it in actually breaks those protruding diamonds out of the nickel setting. If you are just rubbing it gently, the nickel will hold the diamond with little trouble. In that case, the diamond itself will outlive any attempt to wear it down. After all, it is diamond.
Ah, now I get it, I thought it was like breaking in a new pair of jeans as opposed to actually breaking it :)
I was thinking about purchasing a D8C, and this is good to know, great thread!
I would try focusing on those spots with the screwdriver or whatever. If that doesn't smooth it out I might want to give Dia-Sharp a phone call on Monday and arrange to send it back for a replacement.
Got the plate superflat and smooth now, took about 5 mins. soaking ma naniwa right now to lap it.
EDIT: wow I love this plate, naniwa was really needing a lapping and my coti is super flt now as well, all good, well worth the price, and less hassle than silicon carbide paper, And I think I need to read instructions in the future... men eh?
thanks guys, replies greatly appreciated
Alex
Yay! :) My 325 works great on my Naniwas... now if I could just get my 600 back :banghead: