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Gallery, Projects and General => How to's => Topic started by: doubleboost on May 29, 2013, 11:45:34 PM

Title: Climb Milling
Post by: doubleboost on May 29, 2013, 11:45:34 PM

[ Invalid YouTube link ]


John

Title: Re: Climb Milling
Post by: SwarfnStuff on May 30, 2013, 03:11:09 AM

Yet another great video thanks John. I learn lots from these, as do others from the comments I see in various posts. Thanks again
Another John (Great name  :med:)

Title: Re: Climb Milling
Post by: Pete49 on May 30, 2013, 10:15:10 AM

Keep them coming John  :mmr:
Pete

Title: Re: Climb Milling
Post by: andyf on May 30, 2013, 02:32:50 PM

Yet another blockbuster from DB Studios. On the night shift, too - posted at 4.45am UK time!
Nice video, but don't kill yourself for our sakes, John.

Best description of the possible effects of climb milling I know is that it is like feeding wood into a table saw from the wrong side. The blade would pull the wood in and attempt to take huge chomps at it, with disastrous results. That said, even on my old Dore Westbury, I often take light finishing cuts that way. As the tool approaches the work, I push the table in its direction of travel, so the feedscrew slack is taken up and the first contact won't jerk the work forward.

Andy

Title: Re: Climb Milling
Post by: doubleboost on May 30, 2013, 03:26:28 PM

Hi
Andy
I started the upload of the video at 2200 our time it took 4 hours to upload the file
Slow connection and massive file
The computer made a noise when it finished that woke me up  :lol: :lol: :lol: :lol:
John

Title: Re: Climb Milling
Post by: micktoon on May 30, 2013, 06:22:47 PM

Hi John , another fine video  :bow: :bow:, did you alter the lighting as it looked brighter and clearer I thought , I managed to see it at about 12.30 am last night, so dont know Youtube do it.............. Keep up the good work ......and get that overcoat washed lad  :lol:

 Cheers Mick.

Title: Re: Climb Milling
Post by: sparky961 on May 30, 2013, 10:23:41 PM

It is easy to forget the effects of climb milling when you get in a hurry...

Late one night I was finishing up this piece by cutting a half round in the bottom using an end mill in a drill press.  Certainly not the cleverest setup I've come up with.

Interesting was to power feed a piece, I suppose...

(apologies for the huge pics in advance, but no time to resize at present)


Sparky
I fixed them up for you. Hope that is OK.  Don  :D

Title: Re: Climb Milling
Post by: krv3000 on May 31, 2013, 06:06:35 PM

well dun john  :thumbup:

Title: Re: Climb Milling
Post by: mechman48 on June 07, 2013, 10:15:40 AM

Another super video John, always much easier to understand when you see someone do it other than talk about it  :clap:  :clap:  :clap:

George

Title: Re: Climb Milling
Post by: Pete. on June 07, 2013, 11:00:55 AM

Nice one John.

What temperature is "bastad 'ot" then? :D

Title: Re: Climb Milling
Post by: mosey on June 07, 2013, 12:13:46 PM

Are you saying that one should never climb-mill?
Mosey

Title: Re: Climb Milling
Post by: sparky961 on July 29, 2013, 01:57:55 PM

Quote from: mosey on June 07, 2013, 12:13:46 PM

Are you saying that one should never climb-mill?
Mosey

Generally speaking, if you don't have ball screws you should not be climb milling.  Leave it for the big CNC machines.  On any mill with significant backlash, you're just asking for trouble climb milling.

Of course there are always exceptions.  Sometimes a light climb-milling cut can get you a better finish on a hobby machine, but you need to be careful that it isn't trying to suck the workpiece into the cutter.  A bit of common sense goes a long way here, as does learning from your own mistakes.

Title: Re: Climb Milling
Post by: Fredbare on July 29, 2013, 03:11:53 PM

Excellent video John again, I really appreciate all your work putting these together, many thanks.

John