I've got those too. Actually they're spruce but same thing pretty much. They're loud too.
But those walnuts, I was still working on that post when my phone f*ed up on me. Battery was crashing so I just hit "post" figuring I'd plug in the phone and edit it. But even when it was plugged in, it was only drawing 0.4 amps from the USB port and the battery was still crashing. I had to turn it totally off, and then it only charged at 0.8 amps. It usually pulls 1.37 amps.
Anyhow,.. the walnut..
When I held it up to the belt sander I expected it to quickly sand through it but no. It was like sanding a piece of dense hardwood.
The wood from the black walnut tree is really dense and strong. It's really good, strong, dense hardwood. The only reason I don't use it for outdoor stuff is it's perishable. Doesn't have the weathering capabilities of osage orange (my favorite wood) or white oak.
I'm thinking I can use black walnut shells as sandblasting media.
I hear silica sand, the best sandblasting media, is worse than asbestos to breathe.
Other media like glass beads is ridiculously expensive even at Harbor Freight.
But how do I separate the hard shell material from the nut meat?
Well, we've all seen the original 1971 Gene Wilder version of Willy Wonka and the Chocolate Factory.
The scene with the squirrels that sort the golden eggs.
I'll use squirrels as my employees like Willy Wonka.
First I need a dead squirrel so I can measure it's head.
Squirrels are rodents, and rodents can squeeze their whole bodies through any hole big enough for their skull to fit though.
Then I need to measure an average size walnut.
If I make a cage to fill with the walnuts, with an entry hole only big enough for the squirrels to get through without a walnut in it's mouth, the squirrels will not be able to take them out, but they'll be able to go in & eat them.
Eventually there should be nothing left in the cage but the shell material.
Then I'll need some way to crush them up into fine particles for sandblasting.
I could sell it by the pound. I've got three black walnut trees.
"Processed by live squirrels"