Hacks

Make: Projects – Permanently stain PVC pipe any color you want

Make: Projects – Permanently stain PVC pipe any color you want

I love PVC pipe: It’s weatherproof, cheap, commonly available, easy to work, and easy to join temporarily or permanently. Apart from a slightly icky environmental footprint, the only serious drawback of PVC pipe is that it’s ugly, owing largely to the fact that it’s usually available only in white, off-white, gray, or (sometimes) black. PVC can be painted, sure, but getting a good finish requires careful surface preparation, and even then the paint tends to flake or wear off with time, weather, and/or handling.

But, as you’ll know if you’ve ever tried to remove a purple primer stain, it is possible to indelibly colorize PVC pipe. I got curious about what was in purple primer, and a bit of digging revealed that it’s just clear primer plus purple dye. I reasoned, then, that I ought to be able to make my own “purple primer” in whatever color I wanted by adding solvent dye to clear primer. Long story short: It works, and it works great. You can read all about it here.

Teensy fridge controller

Teensy fridge controller

From the MAKE Flickr pool: Flickr user P^2 – Paul created this fridge controller run by a Teensy: This is a microcontroller-powered temperature controller for a fridge I built out of fabricated necessity and spare parts last weekend. Backstory: We replaced our ancient 2nd fridge with a big new upright freezer, which left our little […]

Webcam + CNC robot = high resolution scanner

Webcam + CNC robot = high resolution scanner

Tormach wants to sell you an upgrade package for your Mach3-compatible CNC robot that includes a 1.3M USB microscope with 220X optical magnification, a mounting bracket, and all the necessary software to turn your CNC equipment into a scanner. The cool part is they’ve also produced a video showing how to hack together a slightly-less-powerful system using a $20 pen cam and some free software that will let you make 2000 dpi scans limited only by the size of your CNC bed envelope. The “killer app” for this equipment is automatic reverse-engineering of parts, but you could also use it to easily scan maps, posters, artwork, or other oversize stuff. [via Hacked Gadgets]