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Thread: Honing chisels on MDF
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30th April 2020, 08:33 AM #1GOLD MEMBER
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Honing chisels on MDF
Hello, I have tried to hone chisels with the green cutting / polishing compound rubbed on to MDF. The compound is like hard crayon, but leaves a bumpy and uneven distribution when rubbed on the MDF. What is the best way to apply this to the board? I should imaging the end result should be dead smooth coating and embedded into the MDF surface a bit.
Also, the green turns black fairly quickly after being rubbed by chisels and plane blades. Does anyone know the cause of this, and how to avoid it please?
All ideas and suggestions are most welcomeregards,
Dengy
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30th April 2020 08:33 AM # ADSGoogle Adsense Advertisement
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30th April 2020, 12:56 PM #2
It will smooth out with use. The black is the steel coming off the blade you do not avoid it. You are not doing anything wrong thats just how it works.
Regards
John
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2nd May 2020, 10:02 PM #3GOLD MEMBER
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Or you could come around to my place and have a look at my home made leather strop on my Tormek, using red cutting compound.
Rgds,
Crocy.
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2nd May 2020, 10:39 PM #4
Add a few drops of baby oil (= mineral oil). This will dissolve the compound and spread it.
See: http://www.inthewoodshop.com/Woodwor...mondpaste.html
By the way, I prefer planed hardwood instead of MDF.
Regards from Perth
DerekVisit www.inthewoodshop.com for tutorials on constructing handtools, handtool reviews, and my trials and tribulations with furniture builds.
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3rd May 2020, 08:46 PM #5GOLD MEMBER
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>The green of the Chromium Oxide turns black with the finely divided metal particles that are scratched off your tool.
Just because it's black does not mean that the honing compound is exhausted quite yet.
> Don't scribble so much on that it goes crusty. Not necessary. The vehicle in the stick is some sort of waxy substance.
Therefore, warm the stick up in your shirt pocket (or arm pit in my winter shop) and it will spread more easily.
I would not use any sort of a lubricant as friction and cutting power are the needed concepts.
> I've never used MDF for a strop. Plate glass, laminate flooring, stone kitchen counter-top off-cuts, those kinds of rubbish.
Next, I use masking tape to secure a strip of cereal box card, file folder, etc as my strop.
I scribble CrOx all over that = good enough. Simple. Economical. Easily replaced in a matter of seconds.
= = =
I carve with the crooked knives and adzes which are the common carving tools up here in the Pacific Northwest.
Most of my strops are dowels or pipe with file cards wrapped around them, loaded with CrOx/AlOx.
The full sized Stubai wood carver's adze is a 7/75 sweep (#7 sweep and 3" wide). Cupped.
My strop is a tennis ball scrubbed with CrOx. Really no choice.
If you are beginning to imagine that I do all the sharpening free-hand, you're right, I do.
Hindsight tells me that you spend a long time in the shop, putzing around with strops and compounds until you arrive
at a set-up that is fast and effective to give you an edge you are happy with.
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3rd May 2020, 09:32 PM #6GOLD MEMBER
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Hi Dengue,
Just been rewatching a Youtube video of Paul Sellers sharpening chisels. For the final honing he puts his honing compound on an old piece of pallet wood!
Keep safe,
Brian
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3rd May 2020, 09:51 PM #7
Mandatory HHGTTG quote!
Vogon Poetry! Ode to a lump of green putty I found in my armpit one fine summer morning....
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3rd May 2020, 10:03 PM #8
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3rd May 2020, 11:35 PM #9Visit www.inthewoodshop.com for tutorials on constructing handtools, handtool reviews, and my trials and tribulations with furniture builds.
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4th May 2020, 06:20 AM #10GOLD MEMBER
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I'll say take the blades out to sharpen/hone them. The only long straight edges that I use very much are spoke shaves and a draw knife.
I need to repeat the total included bevel angle and that means a naked blade.
I have a wooden paint stick with a bolt as a handle for the little spoke shave blades. Simplifies the accuracy.
There isn't enough of the blade sticking out, even in a Stanley Bailey #5, to work on the bevel.
Strops. Sure, just about anything flat and hard will do.
In medieval times, the only common substance that was flat was leather. So they used it. We can move on.
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4th May 2020, 11:44 AM #11GOLD MEMBER
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