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11-30-2009, 07:39 AM
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Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,565
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Before you buy a drill press...
...consider a benchtop milling machine instead. I've used mine (purchased here: http://www.micromark.com/MICROLUX-BE...MILL,8102.html) for many, many tasks over the life of my -6A project and have done a number of other projects with it as well. Some of the RV tasks I've done with it include :
- Cutting the instrument panel, including round, rectangular, and polygonal holes
- Cutting the horizontal stabilizer shims to account for a slight fuselage twist: one shim is 0.125", the other shim is 0.110". The stab is perfectly level.
- Using a fly cutter for many different lighting holes, running it at under 100 RPM. The spindle speed is completely variable between 0 and 2500 RPM, and running the fly cutter at a low speed is less "sporty" than the 600 RPM minimum speed found on many low-end drill presses.
- Cutting various brackets from aluminum bar and angle stock much more precisely than could be done using a band saw and/or die grinder. The support brackets for the electric flap motor, the fuel tank support brackets, and many others.
- Cutting multiple aluminum tubing spacers to the same exact lengths. Making standoffs is trivial.
- Drilling & threading holes exactly in the center of aluminum rod (a lathe might be even better, but I digress).
- Split UMHW blocks precisely - no washer spacers needed
- Drilled holes in hardened steel without issue - at a slow speed (perhaps 200 RPM), the drill doesn't overheat and workharden the piece/dull the bit.
__________________
Brad Benson, Maplewood MN.
RV-6A N164BL, Flying since Nov 2012!
If you're not making mistakes, you're probably not making anything
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11-30-2009, 08:51 AM
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Join Date: Jul 2007
Location: Delta, CO/Atlin, BC
Posts: 2,391
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Brad,
Now that I'm done with my 9A, I've been thinking of getting something like this (for the next project?). I presume you have one of these - how well has it stood up (and how much work have you done on it)? Looks like a reasonable solution for a "home" machine that won't see hard use.
thanks,
greg
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Greg Arehart
RV-9B (Big tires) Tipup @AJZ or CYSQ
N 7965A
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11-30-2009, 09:06 AM
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Join Date: Nov 2006
Location: Lewistown
Posts: 161
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i agree!
Since i got my milling machine I have used my drill press very, very little.
__________________
Noel Simmons (repeat builder) just ordered my 40th it's an 8!
406-538-6574
A&P CFI EAA Tech/EAA flight adviser
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11-30-2009, 10:05 AM
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Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,565
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Quote:
Originally Posted by Greg Arehart
Brad,
Now that I'm done with my 9A, I've been thinking of getting something like this (for the next project?). I presume you have one of these - how well has it stood up (and how much work have you done on it)? Looks like a reasonable solution for a "home" machine that won't see hard use.
thanks,
greg
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I've had mine since 2004 or so and have have done a number of small projects with it in addition to the RV-related items. It's held up quite well; the only things I've done to it have been the usual maintenance (lubricate etc.) although I keep thinking I'd like to add some digital readouts. Mine is the older model from the one listed; basically, the only real difference is some of the gears in mine are nylon instead of steel. No real runout on the head as of yet, which has surprised me a bit as I thought there would have been quite a bit by now.
__________________
Brad Benson, Maplewood MN.
RV-6A N164BL, Flying since Nov 2012!
If you're not making mistakes, you're probably not making anything
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11-30-2009, 10:37 AM
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Join Date: May 2006
Posts: 532
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Quote:
Originally Posted by ChiefPilot
I've had mine since 2004 or so and have have done a number of small projects with it in addition to the RV-related items. It's held up quite well; the only things I've done to it have been the usual maintenance (lubricate etc.) although I keep thinking I'd like to add some digital readouts. Mine is the older model from the one listed; basically, the only real difference is some of the gears in mine are nylon instead of steel. No real runout on the head as of yet, which has surprised me a bit as I thought there would have been quite a bit by now.
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These little mills look nice. I had been looking at Taig, but like these, too. Will these machines (easily) accept digital readouts? Even on the Z-axis?
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11-30-2009, 05:39 PM
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Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,565
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Quote:
Originally Posted by Dean Pichon
These little mills look nice. I had been looking at Taig, but like these, too. Will these machines (easily) accept digital readouts? Even on the Z-axis?
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Yes - all three axis - but they are kind of pricey. About the same price as the mill, actually. That said, I can think of so many times a DRO would have been useful along with a couple of times I trashed a piece because I miscounted the number of turns. There lot's of add-ons at http://www.littlemachineshop.com - the DROs, tooling, and more as well.
__________________
Brad Benson, Maplewood MN.
RV-6A N164BL, Flying since Nov 2012!
If you're not making mistakes, you're probably not making anything
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07-17-2011, 11:29 AM
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Join Date: Jul 2011
Location: Tampa, FL
Posts: 65
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Would a mill replace anything other than a drill press? Still need a band saw?
Harbor Freight has a Mini Mill that with their present 20% promotion would be $542 including tax and shipping.
I don't know a lot about mills, but it appears there may be some additional items to purchase to get it up and running, such as this Tooling Package, and a vise. ChiefPilot is correct that the Digital Readout Package (DRO) is actually more expensive than the mill itself, though as I understand it, not necessary.
I'm definitely a fan of having high quality tools that will save time and improve quality, but even with some of the positive comments above, and reading other threads, I'm having a difficult time determining the "cost/benefit" of a mill.
I'd love to hear from others who have any thoughts or experience that might be helpful.
Thanks!
Chris
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Chris S. Johnson
Tampa, FL
RV-8, Empennage
2015 VAF Dues paid!
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