scribing a dial

[irishwoodsman]

i was wondering if a tabletop band saw would be good enough to mark dials with or go over the old dial markings, the blade is pretty thin. thanks mac:thinking:

 

[8ntsane]

i was wondering if a tabletop band saw would be good enough to mark dials with or go over the old dial markings, the blade is pretty thin. thanks mac:thinking:

Hi Irish, Marking or remarking dials would be better done on either your mill, or lathe. On the mill with the rotary table works good. Ive used Marv Klotz RT program to get all the divisions plotted out. Make it easy. Just a pointed tool in your spindle, and use it like a hand shaper to scribe you divisions out. You can also do this in your lathe, but only if your re marking the originals. Using the carriage stop to make your grads, and mounting a sharp pointed cutting tool in your tool post, again using like a shaper with the spindle shut off. Some carefull positioning of the cutting tool, using a magnifier to be certain your cutting tool lines up with the original grad will produce a decent job too. Just drop the lathe in the lowest gear to hold chuck position. I wouldn't use the bandsaw, most likely be to wide for grads, and not do a clean job.

 

[irishwoodsman]

Hi Irish, Marking or remarking dials would be better done on either your mill, or lathe. On the mill with the rotary table works good. Ive used Marv Klotz RT program to get all the divisions plotted out. Make it easy. Just a pointed tool in your spindle, and use it like a hand shaper to scribe you divisions out. You can also do this in your lathe, but only if your re marking the originals. Using the carriage stop to make your grads, and mounting a sharp pointed cutting tool in your tool post, again using like a shaper with the spindle shut off. Some carefull positioning of the cutting tool, using a magnifier to be certain your cutting tool lines up with the original grad will produce a decent job too. Just drop the lathe in the lowest gear to hold chuck position. I wouldn't use the bandsaw, most likely be to wide for grads, and not do a clean job.

ty thats what i needed to know.hew:

 

[Pacer]

Yeah, I think you would find that not only would you have much difficulty controlling the spacing with a band saw, I think even tho the blade is thin, it would still make too wide a mark.

An old broken 1/4 or 3/16 end bill ground to about a 60° sharp point makes about a perfect scribe. The mill with a dividing head (what I use) or a rotary table is by far the easiest, but with some finagling the lathe will do it too.

Here a couple complete assys I made up to replace small metric dials, and have larger ball cranks --

 

[irishwoodsman]

Yeah, I think you would find that not only would you have much difficulty controlling the spacing with a band saw, I think even tho the blade is thin, it would still make too wide a mark.

An old broken 1/4 or 3/16 end bill ground to about a 60° sharp point makes about a perfect scribe. The mill with a dividing head (what I use) or a rotary table is by far the easiest, but with some finagling the lathe will do it too.

Here a couple complete assys I made up to replace small metric dials, and have larger ball cranks --

Nice job, i will prob use the lathe to do this, will have to make up a jig, i do have some ball bits i use on guns i think that will be good enough since i,m just chasing the originals increments. thank you much for the info. mac
hew: