CNC all the things


#101

http://www.tangerineaudio.com/images/slideshow1/k4.jpg


#102

I did daydream about a cnc chassis for my 401 like artisan fidelity make for the 301.

Alas my machine isn’t really built for hogging out huge chuncks of aluminium, with some additions like a coolant system and a cover it would be ok, but it would still take days.


#103

With some bits of marble and cut glass in there somewhere.


#104

Wot no onyx?


#105

Nope. I do like this I have though :star_struck:


#106

Fat Bob?


#107

How rude


#108

That’s the new “Fat Cunt” turntable.


#109

Does it come with a free clipboard?


#110

PD drivers are bloody brilliant. I may get some 15" ones for my bass horns.

Had some a few years back. They work well in quarter waves


#111

Needs gold finishing touches


#112

Current mids are PD107s, sound great.


#113

Shame I don’t work in engineering anymore the 5 axis hitachi sieki I used to work would have pissed this out of solid billet in about 40 minutes.


#114

Yeah, work has lots of lovely machine centres, as do the machine shops I regularly visit, unfortunately one off pricing for such things is eye watering.


#115

I don’t have much hands-on experience with Al alloy. Do you have to be careful with choice of grade or production technique (e.g. rolled vs cast) to avoid the thing creeping horribly out of shape as you cut metal away ? Or do you just rough cut most of it out then go back and do the final skim to finish it to size ? Or do you have to bugger about with annealing ? I once tried to get someone to CNC me some high-voltage electrodes in 304 stainless. They had to be carefully profiled in one (short) dimension and dead straight in the other (long) one. Keeping them straight was a nightmare. Every time they came off the machine they’d curled.

VB


#116

Its mostly just feeds and speeds. If the chips form right they take a lot of the heat away, combine that with the liberal use of coolant I don’t believe things warping is much of an issue.

Most of my experience however is manual machines which is much easier.


#117

What are the bass units?


#118

B&C 18PS76


#119

Just need to cnc the terminal plates and I should be able to run them active.

Still waiting on some passive crossover parts.


#120

Looking good…