Dear Dr. Dinglefarb, I really enjoyed your 3rd installment on the Autometric's motor mount. You withdrew a few solid laughs from me that were bigger than the "Aluminum Wig" the Hougen Rotabroach was wearing and swinging around like Jon Belushi with his Toga on! LOL! Thank you for that laughter, and also for just being so mellow and not taking things so seriously you can't laugh at yourself. I definitely try to surround myself with people like that, life is too short to spend your time any other way. Your ad-lib vocabulary was classic in this show as I've come to expect and enjoy. It reminds me of how we used to talk at the bodyshop while working on all kinds of cars with all races of people. Made up words and modifyers made communicating faster and just more fun! Hoping you're having a good week, Aloha...Chuck
Thanks for showing the manual interpolation technique. I wish I had seen this a couple of months ago when I needed to bore a ~4" hole... Instead I started with a 1 inch drill and then bored my way out one pass at a time :) Thank goodness for the power feed on my mill
I always set the vice up way to one side of the table. That leaves you a nice size area of table for non vice work. I do this on the CNCs too and rarely have to move the vice. We have a bucket full of 1" thick aluminum slugs from the waterjet that are great for blocking up stuff on the table and it hurts nothing to cut into them. Its nice to have lots of space under the work for chips.
Gday again Tom, I liked your freehand milling work mate, I've done a bit myself & it is not as easy as it looks, it takes a lot of practice. Freehanding radii on a lathe is something that takes a lot of practice also. Good stuff !! Cheers, Pete. aka - "Pedro"
Hey Pedro, I did a few in the lathe back in the day. Used to match them to templates for non precision stuff. You can also step turn large radii with great results. Cheers, Tom
Tom, watching that Rotabroach spin in and whip up that cloud of stringy bahstahd chips made me think of Taz from the cartoons when I was a kid. Needed that turbine spin up sound effect to go with it though! Nice job interpolating. You can be the standby in case the CNC controller goes toes up. Thanks for letting us watch! -- Mike
Fred Flintstone would love to have the centers for his ride for say snow mud or hill climbing, thought you could use a good laugh Tom. Very nice work by the way.
When you cut through the hole with the annular cutter I recommend letting the spindle head come to a stop before raising out of the hole. You don't want that sharp-edged plug spinning out of the cutter in your direction. Sometime those plugs are loose and can drop out of the tool just by gravity.
Hey Tom, you sure get excited when you whip out the "roto-broaches". ...happy to put them to use. We/I used a similar kind of hole cutter at McDonnell-Douglas (to cut holes for circular "Cannon" plugs). Gota dig the thick wall. They cut super smoothly.
You do nice videos, thanks for sharing, I got tired of the chips, set up a shop vac hose on my mill and another at the lathe. Chips are in the can and not on the floor.
Can you make a single tooth toolbit for the boring head? Like a hole saw or annular cutter but with one tooth and cuts to an infinfinite range between the boring heads limits. Nice mount, coming together nicely. Really liking this series of fixing the jig bore.
And by exciting you mean scary? I bought 3, 15/16" rotabroaches in a tool lot. But two of them have big chunks out of the side, bad enough you need to cut them in half and regrind them. Are they worth fixing?
Andre Gross Hey Andre, Not sure. My local tool and cutter shop will sharpen them. I doubt Hougen will mess around with the competitions tools. Cheers, Tom
Tom I noticed when you were roughing out the large hole that when you stopped moving that the cutter squeaked. Whenever I am pocketing out something and getting close to dimension I have the same problem because I need to feed slow or stop to change direction. Other than not stopping or slowing down is there something that can be done to help this as I find it often leaves tool marks?
Hey Bill, I never worry about noise when roughing stuff. If you increase the chip load either by feeding harder or slowing the spindle with the same feed it generally goes away. If you just cannot have any marks you have to go really slow spindle speed or step down the depth incrementally. Even that is not a perfect solution. Cheers, Tom
Looks like that plate is coming along nicely! When you were cleaning up that rough bore I thought there was a paint shaker running, Is this what is meant by intermittent cut in the carbide grade catalogs? :-)
When you were making that preliminary cut on the large hole, the technique is much the same as drawing a picture on an Etch-A-Sketch toy....maybe coin that method as such?
Tom, Another great video. A couple of questions. What were you spray on the 1/2" 2 flute mill. (WD-40?) Could you use the boring head to cut the annulus matching the scribed line? Eric
Hi Eric, Yes it was WD-40. You can use a boring head to cut a annulus through a part as well. The official name for that is Trepanning. The width of the groove makes it a sometimes tricky operation. Its really simple when there is a large space radially from the slug to the wall. When that groove is narrow with a single point rotating tool it can get exciting. Cheers, Tom
Looks great Tom, annular cutting,,, Rotabroach envy this time, it's always somethin', lol... It's fun knocking stuff out that just requires reasonable accuracy (hand cranking circles and such)... Nice draw filing! :o] O,
Hey Rusty, The wide one is a Starrett C-604R-E 1/8th 1/16ths 32nds 64ths with end graduations and the narrow one is a C334 10th and 50ths one side and mm 1/2 mm other side. Cheers, Tom
Hey Tom, Some pretty fancy milling, if you ask me! It will be nice to see the autometric jig boring machine doing its thing. When you get it working to spec, will you dance the Autometric Jig? (I'd pay $$$ to see that!) Silliness aside, thanks for another great video. Have a good one! Oxen Dave
Tom, I know why you use canned air, to save money, do you refill them, using a tubeless tire valve? Also great to recharge cans of paint and other products.
Note to self: zero the dials before etchasketching out the plug ala bore 2 - I can just see myself seeing that center punch mark falling away and kicking myself before it hit the bed :)
Nice freehand X Y cutting! A little like patting your head and rubbing your tummy, easy to do until someone ask "Hey, Tom what do you want for lunch!?" :) Next week.... we see Tom build and grind a version of a Holex Trepanning cutter. Hmm, 17-4 H900 would come in handy for that one!
Hey Colin, Somebody pointed out I could have loosened the clamps and moved the shim. Dohhhh. Sometimes tunnel vision makes your life harder. Cheers, Tom
Dear Dr. Dinglefarb, I really enjoyed your 3rd installment on the Autometric's motor mount. You withdrew a few solid laughs from me that were bigger than the "Aluminum Wig" the Hougen Rotabroach was wearing and swinging around like Jon Belushi with his Toga on! LOL!
Thank you for that laughter, and also for just being so mellow and not taking things so seriously you can't laugh at yourself. I definitely try to surround myself with people like that, life is too short to spend your time any other way.
Your ad-lib vocabulary was classic in this show as I've come to expect and enjoy. It reminds me of how we used to talk at the bodyshop while working on all kinds of cars with all races of people. Made up words and modifyers made communicating faster and just more fun!
Hoping you're having a good week, Aloha...Chuck
I like the hand interpolation method! To avoid that interrupted cut, I have taken a deeper doc in the past. Thanks for the great video!
Hi Zeeshan,
You are right I could have dug in a little further. Thanks for the comment.
Cheers,
Tom
Very cool! Thanks for sharing your time and talents. All the best Chuck.
Thank you Tom for the nice project work. Enjoyed watching with the morning coffee.
Randy
This is looking like a PRO built part. Great vid. Keep them coming , learning a lot of new tricks.
Hi Wayne,
Thanks for the comment. I'm sure I'll find a way to bozo it. Stay tuned.
All the best,
Tom
I could hear that thing shrieking all the way down here in Oakland. Starting to look like an actual part now, good work Tom.
Hey John,
That shrieking you heard was your neighbor that spotted you walking around in your pajamas. Thanks for the comment.
Cheers,
Tom
That would do it Tom.
Thanks for showing the manual interpolation technique. I wish I had seen this a couple of months ago when I needed to bore a ~4" hole... Instead I started with a 1 inch drill and then bored my way out one pass at a time :) Thank goodness for the power feed on my mill
Hey Hans,
We used to do a lot of large holes in thinner material. If you practice a bit you can actually get pretty close to the line.
Cheers,
Tom
I always set the vice up way to one side of the table.
That leaves you a nice size area of table for non vice work.
I do this on the CNCs too and rarely have to move the vice.
We have a bucket full of 1" thick aluminum slugs from the waterjet that are
great for blocking up stuff on the table and it hurts nothing to cut into them.
Its nice to have lots of space under the work for chips.
Hey Gent,
At work I always look in the scrap bin where the waterjet is. All kinds of useful stuff to be found in there.
Cheers,
Tom
Abundance of machining talents. Enjoyed!
Thanks....13
Gday again Tom,
I liked your freehand milling work mate, I've done a bit myself & it is not as easy as it looks, it takes a lot of practice. Freehanding radii on a lathe is something that takes a lot of practice also.
Good stuff !!
Cheers, Pete. aka - "Pedro"
Hey Pedro,
I did a few in the lathe back in the day. Used to match them to templates for non precision stuff. You can also step turn large radii with great results.
Cheers,
Tom
Tom, watching that Rotabroach spin in and whip up that cloud of stringy bahstahd chips made me think of Taz from the cartoons when I was a kid. Needed that turbine spin up sound effect to go with it though!
Nice job interpolating. You can be the standby in case the CNC controller goes toes up.
Thanks for letting us watch!
-- Mike
Hey Mike,
I used to love that winding sound Taz made. Turbo spooling up.
Cheers,
Tom
Fred Flintstone would love to have the centers for his ride for say snow mud or hill climbing, thought you could use a good laugh Tom. Very nice work by the way.
there is a really nice MQL set up by Uni Mist which really does not flood out the cutter path.. use one on the presses too.
I like that, your BNC cutting . (B for brain).Even the chip blower is human powered! just like on the big handwheel.
When you cut through the hole with the annular cutter I recommend letting the spindle head come to a stop before raising out of the hole. You don't want that sharp-edged plug spinning out of the cutter in your direction. Sometime those plugs are loose and can drop out of the tool just by gravity.
Hey Tom, you sure get excited when you whip out the "roto-broaches". ...happy to put them to use. We/I used a similar kind of hole cutter at McDonnell-Douglas (to cut holes for circular "Cannon" plugs). Gota dig the thick wall. They cut super smoothly.
that is so cool the way your doing that :) thanks for sharing
You do nice videos, thanks for sharing,
I got tired of the chips, set up a shop vac hose on my mill and another at the lathe. Chips are in the can and not on the floor.
Hi Bill,
Thanks for the comment.
Cheers,
Tom
Can you make a single tooth toolbit for the boring head? Like a hole saw or annular cutter but with one tooth and cuts to an infinfinite range between the boring heads limits.
Nice mount, coming together nicely. Really liking this series of fixing the jig bore.
Hi Andre,
You can and its called trepanning. The narrow groove and single point rotating tool make it exciting when you break through.
Cheers,
Tom
And by exciting you mean scary?
I bought 3, 15/16" rotabroaches in a tool lot. But two of them have big chunks out of the side, bad enough you need to cut them in half and regrind them. Are they worth fixing?
oxtoolco Hougen will resharpen them. I don't know if they will cut them down.
Cheers,
Tom
They are not made by Hougen, will they still sharpen them?
Andre Gross Hey Andre,
Not sure. My local tool and cutter shop will sharpen them. I doubt Hougen will mess around with the competitions tools.
Cheers,
Tom
Tom I noticed when you were roughing out the large hole that when you stopped moving that the cutter squeaked. Whenever I am pocketing out something and getting close to dimension I have the same problem because I need to feed slow or stop to change direction. Other than not stopping or slowing down is there something that can be done to help this as I find it often leaves tool marks?
Hey Bill,
I never worry about noise when roughing stuff. If you increase the chip load either by feeding harder or slowing the spindle with the same feed it generally goes away. If you just cannot have any marks you have to go really slow spindle speed or step down the depth incrementally. Even that is not a perfect solution.
Cheers,
Tom
Don't know why, but I really enjoyed watching the large rough hole gradually become perfectly smooth. "Lady Luck" credit: LOL. Jon
Hi Jon,
At least she was in the neighborhood this time. It normally goes the other way.
Cheers,
Tom
Dinglefarb? Holicus? Love it.
Dear gawd, hand interpolation! [Puts on helmet and flak jacket] Ok, let 'er rip. Nice work. Send that puck to Stan as a circular reference. [ducks]
Hey Fred,
Good one. A precision plug gage for Stan. I'll have to dig it out of the trash.
Cheers,
Tom
Hi Tom,
Can you tell me how you have that big boy annular cutter is held in your mill? Is it just a collet or is it a special holder?
Thanks
Pete
+Peter A Hi Pete,
I just stick the 3/4 inch shank in a collet. No special holder. Thanks for the comment.
Cheers,
Tom
Hi Tom
Thanks for your reply.
Pete
I like how you left 5 thou for a finish pass on that first bore. Better lucky than good eh? That was close.
Cheers,
Gary
Lucky is good. It usually goes to opposite way. Especially when somebody is watching.
Cheers,
Tom
Looks like that plate is coming along nicely! When you were cleaning up that rough bore I thought there was a paint shaker running, Is this what is meant by intermittent cut in the carbide grade catalogs? :-)
Hey Brian,
Its called slap bang. The only good thing about an interrupted cut is the chips break without trying.
Cheers,
Tom
Hi Tom, I am curius to know why nobody seems to use the inserts made for aluminium.
When you were making that preliminary cut on the large hole, the technique is much the same as drawing a picture on an Etch-A-Sketch toy....maybe coin that method as such?
I enjoyed all the sounds Chirp,Chirp,Squeek,Squeek.Clunk.Clunk and Clack, Clack
Shop sounds mix.
Cheers,
Tom
Tom, Another great video. A couple of questions. What were you spray on the 1/2" 2 flute mill. (WD-40?)
Could you use the boring head to cut the annulus matching the scribed line?
Eric
Hi Eric,
Yes it was WD-40. You can use a boring head to cut a annulus through a part as well. The official name for that is Trepanning. The width of the groove makes it a sometimes tricky operation. Its really simple when there is a large space radially from the slug to the wall. When that groove is narrow with a single point rotating tool it can get exciting.
Cheers,
Tom
Looks great Tom, annular cutting,,, Rotabroach envy this time, it's always somethin', lol... It's fun knocking stuff out that just requires reasonable accuracy (hand cranking circles and such)... Nice draw filing! :o]
O,
Hey O,
There is great satisfaction in doing things by hand. I say it all the time and really mean it. Thanks for the comment.
Cheers,
Tom
whats a collet ?
😅
Nothing quite like a bowl of shavings and a cup of joe to get the morning started off right,, Thanks
Nice boring bar!
Hey Chuck,
Next time you come over I'll let you touch it.....
Cheers,
Tom
Hi Tom: As Artie Johnson would say from the show Laugh In... "Very Interesting".
nice job tom
What's the rule graduation you have there, decimals ?
part number
Hey Rusty,
The wide one is a Starrett C-604R-E 1/8th 1/16ths 32nds 64ths with end graduations and the narrow one is a C334 10th and 50ths one side and mm 1/2 mm other side.
Cheers,
Tom
Hey Tom,
Some pretty fancy milling, if you ask me! It will be nice to see the autometric jig boring machine doing its thing. When you get it working to spec, will you dance the Autometric Jig? (I'd pay $$$ to see that!) Silliness aside, thanks for another great video.
Have a good one!
Oxen Dave
Hey Dave,
You really have too much time on your hands. Thanks for the comment.
Cheers,
Tom
oxtoolco
Tom . . . I bumped into the spice rack so that's why I have too much "thyme" on my hands!
Dave
Tom, I know why you use canned air, to save money, do you refill them, using a tubeless tire valve? Also great to recharge cans of paint and other products.
Why not just loosen the clamps a bit and push the spacer out of the way?
Gee David,
Why didn't you tell me sooner. It would have saved a lot of eardrums around the world.
All the best,
Tom
Note to self: zero the dials before etchasketching out the plug ala bore 2 - I can just see myself seeing that center punch mark falling away and kicking myself before it hit the bed :)
Hey Steve,
That would be a tough bore to indicate in. Looks like a big rat chewed it out.
Cheers,
Tom
Nice freehand X Y cutting! A little like patting your head and rubbing your tummy, easy to do until someone ask "Hey, Tom what do you want for lunch!?" :)
Next week.... we see Tom build and grind a version of a Holex Trepanning cutter. Hmm, 17-4 H900 would come in handy for that one!
Hey Tom,
How did you know I have a little 17-4 H900 job in the shop right now? Pin for a reloading press.
cheers,
Tom
Hi Tom,
I like the "lazy trick", hope you're lazy enough to show one of those per video...
Good work, thanks,
Pierre
A cheapie carbide boring bar ground a little acute on the tip wouldn't have that square bottom issue....just saying.. ;-)
Colin
Hey Colin,
Somebody pointed out I could have loosened the clamps and moved the shim. Dohhhh. Sometimes tunnel vision makes your life harder.
Cheers,
Tom
Ya, but that would have been too easy...
Apparently once you get past the trees you can see a forest? LOL
Colin
You should have left the piece a rectangle , machine it then cut the outside
Hey Tony,
It was never a rectangle to start with. The stock I had to work with was an oddball shape so sequence was not important.
Cheers,
Tom
that's a bird nest for the bird on your window sill
Lazy guys are always creative.
I work hard as an engineer because I'm lazy and I don't like to work hard. I am always trying to think of an easier way to get things done.
We call that a circular argument. Thanks for the comment.
Cheers,
Tom
just like etch a scetch
Dinglefarb. :-)
If you put up (or email me) dimensions, I'll draw/cam run it in on a CNC, and compare the time. Just for yucks....
Hey Bryan,
Man versus machine eh?
Cheers,
Tom
madhu