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Single Cross Dowel
$0.99
Cross Dowels - 60 Pack
$28.00
Cross Dowels - 12 Pack
$6.99
Introduction:

(Cross Dowels or Barrel Nut) Hardware component used to fasten

Description:

This hardware component makes it easy to mechanically fasten two materials at a right angle. These are used as the main method of corner fastening for my CNC machines. 60 Pack of Cross Dowels (also called Barrel Nuts), 1/4" UNC (20 threads per inch), .62" length, .39" barrel diameter.

Related Tutorials
CNC Panel Joinery from Make:
Here's a really useful article on CNC panel joinery methods by Make:..
Two pieces of wood joined at a right angle using screws and dross dowels (barrel nuts). Step 2 - The Cheapo Connection
Check here for our cross dowel nuts that are used in this tutorial. These are a great way to create joints in wood. If you are looking for some great CNC machine kits, look here. Making corners, connecting two pieces of MDF can be a challenge. I am going to run through a technique, and a vital element in the CNC machine of this tutorial. This step is not as glorious as building an actual working component of one of the CNC axes; however, this type of connection is used on almost every part of the machine. The idea is very simple: with two large holes to receive nuts, and two transversal holes to receive screws (long enough to reach the nuts), a tight and strong connection can be achieved. Not only is this connection strong, it also helps to create the tension desired to tighten an axis assembly around the rods/angles for snug no-play sliding. Other types of connections that I have tried are weak and prone to splitting. I have had no splitting or failures with this method.
John S.C.'s CNC Machine and Suggestions
John S.C. did something that I have not yet seen. He applied a ball-screw to the DIY version of the CNC Machine found on the step by step and the book "Build Your Own CNC Machine". Yes, you heard me right! A ball-screw. Why do I sound excited? Read on.