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Welding - search Instructables. Paracord projects. Secret Knock Detecting Door Lock. Update #4: Nov 23: The Instructable is complete.

Secret Knock Detecting Door Lock

If you want more instructions than are listed here, go here and read all of the steps, see all the photos, and enjoy! Update #3: Nov 11: If you’d like to get updates about the progress of the kits (like when they’ll be for sale and how much) you can sign up for the mailing list here. Update 2 Nov 5th: Thanks for all of your (overwhelming!)

Interest in buying/making/finding one for yourself! Unfortunately I don’t have the spare time to make any extras right now. Update Nov 3: Added a proper schematic. How many times have you seen a secret hideout with a secret knock? While working on another project I ran across the Arduino knock sensor tutorial. Click onward to read more details, source code, photos, etc. If you didn’t watch the video, here’s an overview: A microphone (okay, really a speaker) presses against the door and listens for knocks. Side view. The whole thing is attached to the door with suction cups How does it work? Billychasen/sms-door-opener. Build a Remote Control Deadbolt.

Diwire - DIY wire bender by Pensa. DIWire Bender by Pensa - The DIWire Bender is a rapid prototype machine that bends metal wire to produce 2D or 3D shapes.

diwire - DIY wire bender by Pensa

Simply draw curves in the computer, import the file into our software and press print. Our software can read vector files (e.g., Adobe Illustrator files), Rhino or Wavefront OBJ 3D files, text files of commands (e.g., feed 50 mm, bend 90° to right…) or pure coordinates (from 0,0,0 to 0,10,10 to….). All inputs are automatically translated into DIWire motor commands. During the print, the wire unwinds from a spool, passes through a series of wheels that straighten it, and then feeds through the bending head, which moves around in 3 dimensions to create the desired bends and curves.

Email for questions/comments DIWire's is a free software & hardware device: you can redistribute it and/or modify it's software under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 of the License. Soap-Making for the Beginner - Part 1. If you have never made your own soap before, this the first of a two-part lesson.It is soap making for the total beginner.

Soap-Making for the Beginner - Part 1

I have been making soap for years and recently decided to try to develop a recipe for a reliable batch of soap using ingredients I can easily obtain, instead of ordering exotic oils by mail.I am guessing this would make it easier for other people who are curious about making soap but don’t know how to begin. Traditionally, people used a combination of wood ash and lard to make soap.

The Soap Factory has an interesting account of the history and chemistry of soap making and the traditional methods of rendering fat and obtaining potash from wood ash. I applaud the homesteader who chooses to make soap using materials at hand and traditional methods. Those of us who want to make things easier need to purchase their materials.

For Part 1 of this soap making tutorial you will gather all of your materials. Equipment Materials 23 ounces (by weight) of olive oil. Soap Making for the Beginner, Part II. Last week you gathered your materials and supplies.

Soap Making for the Beginner, Part II

This week you can finally make your soap! First, I’d like to remind you about safety. This is a project that uses a very dangerous material. Lye is sold in the drain cleaner department with lots of other nasty chemicals because it heats up to a very high temperature when it gets wet and literally burns through the stuff clogging your pipes. You do not want to get it on your body or in your mouth or eyes. Step 1 Measure the oils. Step 2 Following the safety guidelines, take one empty glass jar and put it on the scale and carefully weigh out 4.8 ounces of lye.

Instructables - Make, How To, and DIY.