Malldian - I'll put it in the headphone amp rack, which will be the next project. I've had a big stick of Purpleheart in the garage for a few years, looking for a project. I think I'll use it for the amps as well as pick up a Shallco selector switch so I can switch between amps.
The cost hasn't been that bad. That's Hammond iron (I repainted the covers) and was about $150 for the three. The main aluminum plate was a 3/8" thick offcut I found on eBay for $35. Probably another $100 for the rest of the aluminum. The caps and resistors are from Michael Percy and cost around $75, though you could get good ones at Digikey or Mouser for $30. Then another $100 for the Alps pot, Cardas jacks, knob, fuse holder, IEC jack, switch, lamp, and Neutrik jack. Maybe another $50 for screws, bolts, threaded rods and other parts. So not too bad.
Oh, the tubes are pretty common and run $6-$12 NOS. Can't remember exactly what I paid, because I bought a number of them in bunches at swapmeets and old electronics stores.
I've been documenting the build along the way. I have photos of most of the layout, cutting, drilling, and shaping. I'm going to take photos of the wiring step-by-step, too.
The plan is to do a writeup from start to finish with the dimensions and instructions. Most tube amp projects just have the schematics and circuit description, the only full build guides (that I know of) are for the CMoy and Dynalo. There should be a build guide for an all tube amp. While not inexpensive, Hammond iron is reasonable and available. The tubes are reasonable and easy to find. Of the DIY plans I've gone through, this is one of the few that has reasonable, accessible parts and a pretty straightforward circuit. I'd like to see more people build amps like this, so a writeup might help.
