Will wood scratch 904L steel?

[J!m]

I didn't read all the posts but here's some food for thought:

Grinding wheels work best when they break down during grinding. Too hard a wheel is not as effective at stock removal.

Then there's the species question. Probably not black walnut if from Central America. And it's not Peruvian either as I used a lot of that in my guitar making.

Then there's another thought: black Palm wood. It is black from the fine black sand that gets caught in the wood as it grows. That stuff will destroy a carbide blade faster than dropping it on the concrete.

Anyway, maybe you can remove one side from each watch holder. Then it doesn't have to go over the wood.

[PatagoniaDan]

IMO that is a very flawed design and would provide lots of aggravation for me, not because of any potential scratches, but because of the tediousness of looping the bracelet over the large diameter of the wooden sides. I understand why they did it though - because the assumption was it would be a buckle type of clasp that would simply go over it.

I'd see if you can remove the wooden sides or something like that...

[HogwldFLTR]

Consider driving a car at 80 mph into a large oak tree; what happens to steel?

[DaveDhc]

Originally Posted by HogwldFLTR

Consider driving a car at 80 mph into a large oak tree; what happens to steel?

F = ma

The force necessary to accelerate the car from 80 mph to zero in a second or two greatly exceeds the molecular forces which hold the metal atoms together. So even though the tree is made of cellulose, the force coming from the tree is tremendous. The discussion about scratching was about intermolecular forces. The bonding forces of the metal being greater than the molecules of cellulose. It is those relative bond strengths that determines what scratches what.

[Rolexdaydateii]

Any contact with wood will scratch. I was in the habit of carefully removing my datajust which is on strap and placing it carefully flat caseback down. I noticed this simple action marks began showing on the steel. After service and refinshing I plan to only place watch down on soft surfaces such as micrfiber cloths.

[DPE]

Will not scratch but rubbing against can dull an area.

[HogwldFLTR]

Originally Posted by DaveDhc

F = ma

The force necessary to accelerate the car from 80 mph to zero in a second or two greatly exceeds the molecular forces which hold the metal atoms together. So even though the tree is made of cellulose, the force coming from the tree is tremendous. The discussion about scratching was about intermolecular forces. The bonding forces of the metal being greater than the molecules of cellulose. It is those relative bond strengths that determines what scratches what.

BS. The point is about hardness and regardless how hard SS vs wood, the damage can be done as you pointed out, it's all about force.

Originally Posted by DPE

Will not scratch but rubbing against can dull an area.

That dulling is due to micro scratches. Look in an SEM and they'll look like valleys.

[Tseg]

My 904L experience and PCLs says breathing on 904L causes scratches.

[airchitect]

Dunno but I wore my new blnr to work one time and after training a new guy in our conference room for a few hours the table and my laptop (alum) had the clasp looking like a spider web. Ah....hairlines....well at least it's broken in now....

[Foxglove]

yes it'll scratch it. I would line it with something soft.

[AK797]

Walnut is nice, I'd keep and use it, just be a bit careful.