So today saw the efforts of my first serious attempt at a complete prototype Stone Age keyboard – this particular model I’m dubbing Pebbles and Bam Bam. It’ll be obvious in a few minutes.
When I first got this wild notion, my plan was to use slabs, cut to shape and polished, giving the typist a flat surface on which to type, while also making it very unique and interesting. And while that is still my plan, there’s an aspect to the rock hobby that still frustrates me.
Patience.
The first thing you learn when you delve into rock polishing, is patience. And it’s a lesson I struggle with in life constantly. You see, in order to get that lovely polished shine on a rock – if you’re using the rotary tumble method as opposed to the vibratory or flat lap method which I’ll talk about another day – what’s required is a minimum of 4 weeks worth of time.
First, assuming you have a tumbler, you load it up with rough (non-polished) rocks, then add Stage 1 grit which is a 60/90 roughness of silicone carbide, add water and turn it on. Then wait.
For 7 days, you wait.
At the end of that 7 days, you clean those rocks meticulously and with great care, in order to rid them completely of that grit. Then, if you’ve achieved a shape you’re pleased with, you move on to stage 2 and repeat step 1 using a 120/220 roughness of grit. BUT – if you’re not pleased yet, you repeat stage 1.
Now wait another 7 days. Repeat the rinsing, study your rocks, determine your level of happiness, and move on to stage 3. Using an even finer grit, 600 roughness. Go find something to do for 7 days, then come back and check them out. How happy are you? How shaped are they, how round, how smooth . . . these all determine if you can advance.
To the Polish stage. 7 days worth of tumbling with a fine Aluminum Oxide polish.
So, providing you’re not bored to tears and have wandered off like a homeless man on crack – 4 stages of 7-day tumbling give you lovely, incredible, shiny, smooth rocks. What I was hoping to do, in order to build a prototype of the Stone Age Keyboard we all had in mind, was to use some polished pieces I have lying around here. Of course none of them were a proper size, so I deemed it a smart idea to cut them – which my sister did for me today. Unfortunately – while I was willing to use them as-is, my sister wisely said to me:
“Don’t be daft, you idiot. They need to be tumbled again to smooth out these rough edges.”
So, as it happens I had a batch of Brazilian Agates ready for stage 3 – so I plopped these key pieces in there. Being already polished and lovely, dropping them into Stage 3 will give just enough friction and rough handling to put a smoother edge on the freshly cut rough bits, then a quick dip in polish and we’ll be good to go!
In the meantime, though, since I struggle with patience, I decided to make Pebbles and Bam Bam.
It took exactly 2 hours to cut all the keys, and my finger tips are killing me! Holding that stem is difficult, at best, and after about half of them the forefinger and thumb tips were screaming out with pain. Bandaids helped, and they’re not damaged, mind you, just sore. But this is what they produced:

Ugly, ain’t it? The keys were easier to cut this time, since I figured out what I was doing.

then it took some swearing, a pair of pliers, and finally putting on my glasses to realize there really IS a tiny notch on the keys that dictates how they can go back down
Took me some time, and I don’t mind admiting I was getting frustrated before I figured that out. Once I did, the keys went back down easily and with little effort.
Now for the Pebbles:

This is the 10-key section of the keyboard. These rocks have been glued down using the GE Window and Door Sealant II, clear. It’s nice stuff, but takes a bit of time to dry, so putting the keyboard together will take a while. My only concern is the ugly bits beneath and behind the keys. I have a few notions of what to do there, but will have to wait and see how this keyboard looks when completed.
So, that’s where I stand now. Pebbles and Bam Bam will be done by tomorrow, then I can test it out, see how weird it is to actually type on. And this week, while we wait for the other rocks to tumble, I’ll talk about rocks and tumbling and such and what not.
Rock On!