Bark River vs Woodcraft green compound

[nuggetz]

Anyone know if these compounds are exactly the same? I need some good quality black and white compound and was going to place an order and get the Bark River compounds. I already have a big stick of green compound from Woodcraft and was wondering if they were the same thing? If so, I'll just get the white and black.

 

[Ben Dover]

Instead of buying by "color" try buying by grit size. Then you'll know exactly what you're getting.

CKTG, Jende and lapidary suppliers sell be grit size.

 

[rlucius]

Bark River black is about 3,000 grit, their white is about 12,000 grit.

They are what I use on my linen belts, leather belts, paper and leather faced wheels.

 

[nuggetz]

Instead of buying by "color" try buying by grit size. Then you'll know exactly what you're getting.

CKTG, Jende and lapidary suppliers sell be grit size.

I hear you but I assume most green's are the same. Not sure how many micron's my green bar is from Woodcraft but I assumed other greens would be in the same range. DLT sells a 3 pack of Bark River Black, Green and White. If the green is the same then I'll skip it. But if their green is of better quality then I'll get their compounds.

 

[Sadden]

Well that's a very dangerous "assumption" to make.

Whats in a green stick compound?

Many people see green compound and automatically assume its chromium oxide. The reality is that very few of these polishing compounds actually contain significant amounts of chromium oxide. And even then the particle size distribution is all over the place , with particles ranging from 400 micron - 0.3 micron you may as well call it pick your own compound cause if you want it we got it in there. Aluminum oxide , iron oxide , chromium oxide , pick your poison.

What are you going to be using these compounds on?

Added: The only green compound I would even consider using is the stuff sold by Hand American at CKTG.

 

[Obsessed with Edges]

The 'stick' compounds can be almost anything, regardless of color. Problem is, many of them are blends of abrasives. Most pure 'green' (chromium oxide) compound in powder form will be ~0.5-1 micron in size. BUT, in stick form, there's no way to know for sure, what else may be blended in with the binders, or how uniform/clean the mix will be.

I have a bar of the Woodcraft green stuff. One thing I noticed, it can leave a hazy finish on polished bevels. To me, that means it's either blended with something, or there are a lot of impurities in it, at larger particle size. I've since been using some green powder form, purchased at a rockhound polishing/lapidary hobby outlet, and it seems much more consistent in the results it produces (polishes, without the haze). I mix it with mineral oil, before application to the strop.


David

 

[Ben Dover]

:thumbup:

The 'stick' compounds can be almost anything, regardless of color. Problem is, many of them are blends of abrasives. Most pure 'green' (chromium oxide) compound in powder form will be ~0.5-1 micron in size. BUT, in stick form, there's no way to know for sure, what else may be blended in with the binders, or how uniform/clean the mix will be.

I have a bar of the Woodcraft green stuff. One thing I noticed, it can leave a hazy finish on polished bevels. To me, that means it's either blended with something, or there are a lot of impurities in it, at larger particle size. I've since been using some green powder form, purchased at a rockhound polishing/lapidary hobby outlet, and it seems much more consistent in the results it produces (polishes, without the haze). I mix it with mineral oil, before application to the strop.


David

David is spot on! :thumbup:

When you buy a green "Crayon" all you know is that it's green. Hand American paste and liquid is .5 micron CrOx.