F1 Group Buy

[Tea-Bag]

{in Spock Voice}

Captain,
According to my calculations - 100 boards are on the Wiki, allowing us further economies of scale.

[hifimaker]

{in Scotty voice}

Captain, Board quantity at full power for 100 unit break. The PCB mfg will now do $11 a board!

-David

[planet10]

Time to start piling on guys...

dave

[hifimaker]

Just a reminder, this F1 GB closes January 9th 2009.

Register on the wiki to be included. If you are wiki challenged, then ask for help here and someone will add you.

-David

[samsagaz]

IM in for other Pair

[hifimaker]

Originally posted by samsagaz
IM in for other Pair

Great, go ahead and ad your name to the wiki.

-David

[hifimaker]

He everyone,

The F1 GB Price is now $11usd plus shipping. We have met the minimum quantities.

Attached is the prototype F1 v1.0 board received from the board house. Some minor tweaks have been made and the production board will be based on version 1.2.

-David

[JOE DIRT®]

Originally posted by Buckapound
One thing to think about for those of you who are having trouble with broken taps is that "forming" taps are a little harder to break that cutting taps. They essentially re-flow the metal rather than cut out chips and are great for softer materials like aluminum. They just look like standard screw threads that have a little cam or lobe shape, without the cutting flutes of a standard tap

As always whit taps, be sure to drill the exact right size hole, which is different for a forming tap than a cutting one. Best to use number drills. And there is a specific lubricant made for tapping aluminum, although most any lubricant is a lot better than none.

In my experience carbide is a terrible material for taps, unless you are tapping abrasive materials like fiberglas. DW8083, are you sure they're carbide and not cobalt? Big difference. Murder to get a broken one out, too. With HSS taps you can just fill the hole with acid and wait for the tap to rust out.

--Buckapound

Typically in the fabrication and machine shops I have owned we used rubbing alcohol for tapping aluminum.......it prevents the tap binding up and thus breaking where as oil based lubricants tend to clog up .....best bet is a water soluable based tapping fluid

just my 2 cents

Happy New Year everyone

[scott wurcer]

Originally posted by JOE DIRT®



Typically in the fabrication and machine shops I have owned we used rubbing alcohol for tapping aluminum.......it prevents the tap binding up and thus breaking where as oil based lubricants tend to clog up .....best bet is a water soluable based tapping fluid

just my 2 cents

Happy New Year everyone

What would you recommend for 0-80 holes in copper pipe fittings? I have tried 4-40 set screws for some DIY mics but they are just too big to catch the short piece of the capsule that sets in the pipe fitting.

[JOE DIRT®]

Originally posted by scott wurcer


What would you recommend for 0-80 holes in copper pipe fittings? I have tried 4-40 set screws for some DIY mics but they are just too big to catch the short piece of the capsule that sets in the pipe fitting.

I would use an epoxy based resin if I am getting what your asking about correct ??