Tinsel Trading Company

LEah Buechley sent a note about Tinsel Trading Company:

“I got a lovely package from Tinsel Trading company today & this reminded me to email you about them. They’re on 38th St in manhattan & they have an amazing cache of vintage metal fabrics, threads, & trimmings, many breathtaking. Most threads are too delicate for machine stitching, but perfect for couture. calling out to be put to use in some beautiful itp project ;-)”

Technorati Tags: , , ,

BatchPCB and OpenCircuits

Sparkfun has started two new spin-off sites recently, BatchPCB and OpenCircuits.
BatchPCB is a site for getting printed circuit boards printed cheaply: $2.50 per square inch. Send them a Gerber file and they send you your boards. It’s slower than other PCB fab sites, because they manufacture them in batches, but it’s one of the cheapest I’ve seen.
OpenCircuits is an open wiki of circuits for projects. So far most of the circuits there are parts from the Sparkfun inventory, but others are undoubtedly on their way. It’s open to contributions as well.

Technorati Tags: ,

Toaster Oven Soldering

So we tried a few experiments in toaster oven soldering this weekend, and had limited success. In the end, it was easier to do the job with a soldering iron, because our surface mount chips were fairly big. But here’s a few tutorials on others’ attempts at it:
Sparkfun has a number of good methods, using a skillet and using a toaster oven.They also have a good tutorial on solder paste stenciling.
Seattle Robotics has a nice clear tutorial on toaster oven reflow.
Thanks to Raffi Krikorian for the link.
Raffi’s notes on his experiment at ITP, on how to get the timing right for reflowing a part already soldered to the board: “we put a piece of solder in there too (on a piece of tin foil), and the instant that solder melted, i pull the board and just tapped it — the IC fell right off…”
Here’s another toaster-oven soldering example, thanks to Sasha Harris-Cronin for the link.

Technorati Tags: ,