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| Most ambitious milling project so far... |
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| John Hill:
David, Stew, thanks guys, I tried to do the the 'right thing' and bought what I think is a decent size mill, a Luxcut turret mill*** and my fear was of snapping off the 6mm cutter (like I have done to my 3mm, and my 4mm cutters :palm:) I did think about drilling the corners first and it would have been better if I had, as it was I had a page full of numbers to follow and sort of got distracted.. :doh: Also, I am thinking that maybe I should invest in power feeds so that I can set to a comfortable feed and stand back as it is just too easy to push a bit too hard and bring blue chips to the surface. :scratch: The coolant is not set up as I am still waiting to get my shop organised and the machine into its final position. ***It is this mill http://www.scottmachinery.co.nz/conventional.php?s=110&ss=140&scode=MTUR-0-0001 |
| sbwhart:
Hi John A power feed does give more control, I fitted one to my X3 late last year and wonder how I managed without it. Stew |
| DaveH:
John, Looks good to me. Most do drill the corners first, and it can be helpful. Milling is a slow job, at the best of times. Especially in the home workshop. A 6mm slot drill cutting 1 mm deep, now a 6mm slot drill cutting 5 mm deep - is removing 5 times more metal - thats a lot more chips to get rid of. The chips have to be removed as quick as they are being made. If the chips are not removed you will cut the same chip over and over again. There is just a limit on how much it can cut and if you force it - it will give up and break. :( Have a quick look at this http://madmodder.net/index.php?topic=4678.msg51465#msg51465 may help a little. Another way to cut (fly wheels) in the mill is to cut it out with a slot drill, then change to a 4 flute end mill, and finish it with small cuts to give a much better finish. This is the way I tend to do it. :D With the end mill try to cut only in conventional milling manner. With milling I find it better to creep up on it -so it don't see you coming :D :D :D It is slow and steady. Your fly wheel still looks good. :D Hope this has helped a little. DaveH |
| DaveH:
John, Your mill is just begging for a power feed - you will not regret it. The control of the total cutting process is so useful, and the improvement in the finish - will really please you. My 2p's worth DaveH |
| doubleboost:
Hi John Like people are saying the machine will tell you how far to push things To take real deep cuts you need lots of coolant not only to keep things cool but to wash away the chips This tends to be very messy on most home mills John |
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