Morse tapers please help

This is actually simple if you have a taper attachment on your lathe. The secret to cutting the exact taper is to use a standard to set the attachment. This is done by chucking the standard true and with a dial indicator mounted on the toolpost or compound, adjust the taper attachment for 0 deviation along its length. Since the taper is identical from size to size, it makes no difference what morse size the standard is. Steve

From Machinery Handbook:

Morse Taper..Dimensions relating to Morse standard taper shanks and sockets may be found in an accompanying table. The taper for different numbers of Morse tapers is slightly different, but it is approximately

5.8 inch per foot in most cases. The table gives the actual tapers, accurate to five decimal places. Morse taper shanks are used on a variety of tools, and exclusively on the shanks of twist drills. Dimensions for Morse Stub Taper Shanks are given in Table 1a.

Taper Taper Taper per inch per foot

0 0.62460 0.05205 1 0.59858 0.04988 2 0.59941 0.04995 3 0.60235 0.05019 4 0.62326 0.05193 5 0.63151 0.05262 6 0.62565 0.05213 7 0.62400 0.05200

Wes S

According to Steve Lusardi :

Have you ever *looked* at the specs for Morse taper in _Machinery's Handbook_ or the like? The spec for Morse tapers *is* slightly different from size to size.

Now other tapers, such as the Jarno, are the same for all sizes.

Otherwise -- the rest of your afvice looks pretty good.

Finish check with a female Morse taper gauge.

Good Luck, DoN.