How to make "speed holes" using dimple dies

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 Or, make your own.
+A special thanks to Drewfus from the HAMB site for offering up the pictures for the homemade dies that are shown here.
 [[File:Homemade_dies.jpg]]
+We’ve all seen fancy dies, toss them a elaborate press, and off you go………..unfortunately I don’t have that luxury. So, I had to create a cheap and easy method to get the flair, without breaking the bank. Using a 4” long piece of 2” solid bar, the following details will explain the basic process I used to create the dies.
+The female die
+Firstly, I drilled a 10.8mm hole through the centre.
+In an effort to make 2 dies from the one bit of bar, I machined a female taper to both ends, the angle was approx. 30 degrees(from square to the centre line), with the O.D. of each taper being 46mm(for the 1 ¼” hole), and 33mm (for the ¾” hole).
+I then tapped a ½” UNC thread through the centre (because that’s what I had closest to hand, a UNF thread, or a larger bolt size would be better if handy).
+The male die
+From an off cut of the 2” bar, I machined a ½” hole through the centre (to match the bolt), and machined a large chamfer at approximately 15 degrees (any bigger of an angle and you will have difficulty in ‘nicely’ flaring the hole, at least by hand anyway…..

Revision as of 21:15, 11 December 2009