What a great idea for a shift knob! - Unfortunately, with my car top down 24/7 the first time I parked it at WalMart someone else would own it Too small might not be comfortable either, and there's the issue of trying to drill too big a hole in too small a sphere (shatter issues). Too big and the grip might be less than perfectly comfortable, and my wallet uncomfortably lightened. What to Miatanetters prefer? What I haven't done is go shopping for various balls of plastic, etc., to experiment. I am wondering what ergonomic parameters might be in play in choosing a diameter. I have 'average' hands for an adult male, perhaps a wee bit smaller than average, cannot tell you my glove size.

There are lots of 1.7' ones, much cheaper.

It seems to go up exponenetially after 2 inches, and I'd been thinking in the range of 2.25' to 2.5'. I've been cruising eBay for a polished sphere of the stuff (supposed to have healing properties, maybe it'll cure idle dip? ).Īs you might guess, cost increases with diameter. I got the threaded insert from the Knobmeister (IIRC about 3/4' diameter), and lined up someone to machine a hole in the malachite once I get it. I think that for my 2000 Emerald Mica LS, a shift knob made of Malachite (swirly dark green stone) would be cool (you want heft? I've give you heft! ). I've been toying with this for a while, now trying to move ahead.

Perfect shift knob