Rear sight......An addition to my steel breech project.

[Oldnshakey]

Thanks KevinP and Sandpiper.  Like I have said before, I am not a machinists.  I wish I had half the knowledge a true machinists has to have.

[Oldnshakey]

Awesome post!  I can't wait to see how you do the adjustments...
andy

Hint:  think Ruger!   Thanks for watching.  Now off to go fishing on the Ohio River.

[sandpiper]

Thanks KevinP and Sandpiper.  Like I have said before, I am not a machinists.  I wish I had half the knowledge a true machinists has to have.

Is that a milling machine or a make shift drill press mill?

[SaiCo]

I truly envy those that have the knowledge and means to make parts like that.
Truly one of a kind, while the rest of us have to buy "off the rack" so to speak.

[Oldnshakey]

Is that a milling machine or a make shift drill press mill?

It is larger and heavier built than the average drill press.  It is advertised as a mill/drill and is basically the same machine as these without the  power feeds or readouts.
http://www.use-enco.com/CGI/INPDFF?PMPAGE=518&PMCTLG=00
http://www.grizzly.com/products/Mill-Drill-w-Variable-Speed-Power-Feed/G1007

Mine is an older Enco model, but looks just like the Enco on the left or the Grizzly machine.   Uses R8 collets and weighs around 600 lbs.

[Oldnshakey]

I truly envy those that have the knowledge and means to make parts like that.
Truly one of a kind, while the rest of us have to buy "off the rack" so to speak.

Thank you.  I appreciate the comment.

[sandpiper]

It is larger and heavier built than the average drill press.  It is advertised as a mill/drill and is basically the same machine as these without the  power feeds or readouts.
http://www.use-enco.com/CGI/INPDFF?PMPAGE=518&PMCTLG=00
http://www.grizzly.com/products/Mill-Drill-w-Variable-Speed-Power-Feed/G1007

Mine is an older Enco model, but looks just like the Enco on the left or the Grizzly machine.   Uses R8 collets and weighs around 600 lbs.

I purchased a milling bit to stick in my Delta drill press. It didn't work at all 

[Oldnshakey]

I purchased a milling bit to stick in my Delta drill press. It didn't work at all 

Most drill presses are not rigid enough and are not heavy enough to dampen vibrations.  Above all is a safety hazard.  A potentially dangerous problem is many drill chucks are held in place only by a tapered spindle and can shake loose when subjected to the side load and vibration of a milling cutter.  If cutting with the side of an end mill, the flutes are actually pulling the cutter and the chuck away from the machine.  A loose, spinning, milling cutter flying across the shop, or at the very least ruining your work, is not something one would want to experience. 

Long term, the bearings in a drill press are not designed to handle the side stresses milling creates.  Cross slide vises, while very handy for locating work for drilling, are usually not rigid enough for milling work, unless in relatively soft plastics or wood.  Even then, the possibility of the chuck and your sharp milling cutter coming off the spindle still exists.

[sandpiper]

Most drill presses are not rigid enough and are not heavy enough to dampen vibrations.  Above all is a safety hazard.  A potentially dangerous problem is many drill chucks are held in place only by a tapered spindle and can shake loose when subjected to the side load and vibration of a milling cutter.  If cutting with the side of an end mill, the flutes are actually pulling the cutter and the chuck away from the machine.  A loose, spinning, milling cutter flying across the shop, or at the very least ruining your work, is not something one would want to experience. 

Long term, the bearings in a drill press are not designed to handle the side stresses milling creates.  Cross slide vises, while very handy for locating work for drilling, are usually not rigid enough for milling work, unless in relatively soft plastics or wood.  Even then, the possibility of the chuck and your sharp milling cutter coming off the spindle still exists.

I know exactly what you mean with the taper. My chuck was binding and needed to be replaced. After staring at it for a while then finally going to the internet, I figured out how to replace it. It's just a precision tapered fit that pops off then back on.

[cheewee]

Most drill presses are not rigid enough and are not heavy enough to dampen vibrations.  Above all is a safety hazard.  A potentially dangerous problem is many drill chucks are held in place only by a tapered spindle and can shake loose when subjected to the side load and vibration of a milling cutter.  If cutting with the side of an end mill, the flutes are actually pulling the cutter and the chuck away from the machine.  A loose, spinning, milling cutter flying across the shop, or at the very least ruining your work, is not something one would want to experience. 

Long term, the bearings in a drill press are not designed to handle the side stresses milling creates.  Cross slide vises, while very handy for locating work for drilling, are usually not rigid enough for milling work, unless in relatively soft plastics or wood.  Even then, the possibility of the chuck and your sharp milling cutter coming off the spindle still exists.

x2 
it is a risky bussiness and needs to be done with great care.
one also needs to think about the direction of cut and try to avoid "climb" milling

[Oldnshakey]

x2 
it is a risky bussiness and needs to be done with great care.
one also needs to think about the direction of cut and try to avoid "climb" milling

Exactly!  Very good point about the "climb" milling.

[sandpiper]

Exactly!  Very good point about the "climb" milling.

OK Guys, someone please explain "mill climb".

[breakfastchef]

OK Guys, someone please explain "mill climb".

I am guessing it is akin to a drill bit 'wandering' on a drill press.

[cheewee]

ok picture your cutter turning, now depending on which direction you feed the material into it one way it will be trying to push the material away(conventional) and the other the cutter will try to climb the material, the problem is that it also grabs the metal and drags it into the cutter. the problem is exagerated by exessive backlash in screws and can have disasterous results.
hell a picture is worth a thousand words let me see what i can do.

[sandpiper]

ok picture your cutter turning, now depending on which direction you feed the material into it one way it will be trying to push the material away(conventional) and the other the cutter will try to climb the material, the problem is that it also grabs the metal and drags it into the cutter. the problem is exagerated by exessive backlash in screws and can have disasterous results.
hell a picture is worth a thousand words let me see what i can do.

Ahhh, great artwork  Thank you.