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Diamond Paste Substrates

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Forum topic by alohafromberkeley posted 12-08-2013 09:23 PM 1105 views 0 times favorited 10 replies Add to Favorites Watch
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alohafromberkeley

257 posts in 1868 days


12-08-2013 09:23 PM

Topic tags/keywords: diamond paste sharpening substrates sharpening scary sharp techniques

Hi everyone, as a lot of you know, I’m really a newb to hand tools (actually all tools). I have studied dendrology and am an amateur naturalist and wood collector So I have knowledge of wood ID and have a moderate sized collection of wood samples (I know some wags say 1000 Bdft is a small collection) ;-) Mostly exotic wood cutoffs.Mostly smaller than 3”x 4 to 6” long.

Does anyone here have an opinion on using these hard woods (i.e., Ipe, Cocobolo, Ebony, Bubinga,) as substrates for diamond paste (thinking of getting the DMT 6-3-1 micron paste set.) I have been reading about substrates- cast iron, acrylic, wood, MDF etc. Saw where Derek Cohen uses the bottom a junker plane….he also recommends Jarrah.

I also have a granite sink cut-out ,measured dead flat (Freecycle is my friend). And a selection of Al-Oxide and SilCarbide sand paper from 100 to 1500 grit.

I can’t afford a diamond stone, LV iron plates, water stones at this point (On a fixed income budget, I’d rather use what I have.) So I really need some input from people who used these. I want to hear how you set up. And esp. what not to do or what pitfalls to avoid. Thanks in advance…...........Wes

-- "After a year of doing general farmwork, it was quite clear to me that chickens and I were not compatible"-George Nakashima


10 replies so far

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Tedstor

1625 posts in 2097 days


#1 posted 12-08-2013 11:01 PM

I’m not sure why you’d want to use an exotic hardwood (especially ebony) when a scrap of MDF will get the job done?
I’ve never used diamond paste, but I’ve used valve grinding compund w/ mdf. It worked well.

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alohafromberkeley

257 posts in 1868 days


#2 posted 12-08-2013 11:16 PM

I have fret board off cuts and have read that some people have problems on mdf with smaller size diamonds embedding to far and not cutting enough. May have to try compound/mdf- the compound is oil based or used with oil.?

-- "After a year of doing general farmwork, it was quite clear to me that chickens and I were not compatible"-George Nakashima

View Tim's profile

Tim

3114 posts in 1425 days


#3 posted 12-09-2013 01:18 AM

Here’s an alternate view to consider. Sharpening to 250-grit.

Note he’s making a point that different sharpening levels are suitable for different needs and you don’t need 16000 grit for everything. He’s not saying 250 is good for everything either.

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alohafromberkeley

257 posts in 1868 days


#4 posted 12-09-2013 01:30 AM

Thanks Tim, I had seen that before but the diamond paste is a “surprise” xmas present I found out about early. Maybe I should take up gemstone polishing with it

-- "After a year of doing general farmwork, it was quite clear to me that chickens and I were not compatible"-George Nakashima

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Mauricio

7115 posts in 2615 days


#5 posted 12-09-2013 06:00 PM

I would use disposable MDF with that approach, I know that stropping compound can gunk up on the surface after a while and it nice to be able to just throw it away and grab a new one.
However I’ve never used the diamond paste so I dont know exactly how it does over time.

As your budget permits check out he EZ Lap plates on Amazon, they are $35 with free shipping which cant be beat. I’m a big fan of the Paul Sellers approach and have been very happy with it.

When you’re just starting out sandpaper works great to. I’d use 220, 400, 1500 and then strop (you can use that diamond paste).

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

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alohafromberkeley

257 posts in 1868 days


#6 posted 12-09-2013 06:57 PM

Hi Mauricio, I have seen those plates. Sellers has great advice and I’m a fan of his,too. Love his common sense approach to everything he does. Guess I’ll go with paper on granite for now. You were so right when you said I won’t believe how many $30 items there are to buy when just getting started…. and many thanks for the #78, just love it…...... Malama pono….Wes

-- "After a year of doing general farmwork, it was quite clear to me that chickens and I were not compatible"-George Nakashima

View bobasaurus's profile

bobasaurus

2670 posts in 2648 days


#7 posted 12-09-2013 07:18 PM

Might try a piece of leather for stropping with the diamond pastes, though I’d avoid it for coarse material removal as soft leather can round edges. I’ve also heard of balsa and MDF substrates.

-- Allen, Colorado

View alohafromberkeley's profile

alohafromberkeley

257 posts in 1868 days


#8 posted 12-09-2013 08:26 PM

MDF seems like the general consensus. Makes sense- flat, cheap and disposable. Thanks Allen!

-- "After a year of doing general farmwork, it was quite clear to me that chickens and I were not compatible"-George Nakashima

View sikrap's profile

sikrap

1121 posts in 2823 days


#9 posted 12-12-2013 06:03 PM

A few years back someone did a test on this using various products for substrates and the test showed that hard maple worked best.

-- Dave, Colonie, NY

View realcowtown_eric's profile

realcowtown_eric

565 posts in 1401 days


#10 posted 12-18-2013 06:09 AM

my faceting machine uses copper plates for a substrate.

And that makes it roughly in the same price range as a large diamond plate.

Eric

-- Real_cowtown_eric

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