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Thread: Maho MH700 Mill
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22nd December 2013, 05:53 AM #16Senior Member
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M
Dunno about the mysterious knob, but imagine it will become evident very quickly once powered up. The little knurled thumbwheel to the left on the vernier, looks interesting, a stop? I definitely wouldn't worry about the character marks on the table.
There was an authentic looking kiwi 037 replica over here that was the usual monte carlo chop - unfortunately destroyed when a mate's workshop burnt down about 15 years back. More interesting, a genuine one is about too, which I'd imagine you'd know about, I see the guy who owns it occasionally when he's exercising his Indycar. If Maho made a spiral milling accessory, a nice exercise would be the supercharger.
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22nd December 2013 05:53 AM # ADSGoogle Adsense Advertisement
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3rd May 2015, 09:47 PM #17Senior Member
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So Close....
After a year and a half with the mill in storage I recently moved it to my Fathers new workshop, when I had a 4 ton forklift on site for the DSG. This means i will be able to use it until I build my own workshop. Last night I went out to the workshop with the goal of making some chips....
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First job was to top up the gear box with some 46 weight Hydraulic oil. After a couple of minor issues with the sight glass it was topped up and ready to go...
Second job was to finish off a BT40 adaptor stud. The Maho came with what looks like standard adaptor/pull studs. these adaptors screw into the top of NT40 tooling leaving 20mm of M16 treads for the draw bar to pull on. The benefit of this system is that you can use virtually any type of 40 taper tooling with its own addaptor, with out having to change over the captive draw bar. At this stage I have a mishmash of metric and imperial NT40, BT40 and I just picked up a DIN 69871 ER32 chuck today.
The mill came with 4 studs, 2 factory imperial and 2 shop made metric adaptors. The factory studs have a Alan key hex broached in to one end so they can be easily tightened. To replicate this I have used 16mm grub screws screwed from each end into my shop made adaptor.
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So with my new adaptor mounted to the BT40 ER32 chuck, I was ready to go........Just need to plug the mill in. Grab the lead walk over to the 3 phase power point too plug it in......NOT. The out let is an old style one with a flat on the bottom not square pin......So close...... Now I have another job added to the list...
Cheers
Piers
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3rd May 2015, 10:32 PM #18GOLD MEMBER
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4th May 2015, 08:53 AM #19.
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I like the simple adaptor Piers. A lot easier than making drawbars. I remember a post on the Schaublin Yahoo site where one of the blokes had made a drawbar with interchangeable threaded ends. Seemed like a neat idea if you didn't need to change differently threaded arbors too often.
BT
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4th May 2015, 09:57 AM #20Senior Member
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5th May 2015, 12:07 PM #21Senior Member
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We Have Power
Got a sparky mate to check out the plug & socket. Turns out that the 20amp outlet is only configured as a 4 pin plug. The center neutral pin hole is only 10mm deep and then it is blanked off. Thus the reason that the plug would not go all the way on......Had nothing to do with the flat as I had assumed...
Simple fix was to remove the center pin from the plug and terminate the wire. The neutral is not required for 3 phase and no single phase power is used on the mill.
Fired up the mill and both motors are working fine. Ran out of time last night to make some chips as I discovered that the vertical head gearbox has it's own separate oil supply which I need to check the level on. Hopping to make it out to the shed tonight....
Cheers
Piers
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17th May 2015, 10:20 PM #22Senior Member
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Wow
Well I finally got a chance to run the "new" mill.
After owning a Chinese mill drill for years, the combination of German Engineering, 2 tons of cast iorn, power feeds and carbide tooling is VERY NICE
First job on the list is to make some 16mm tee slot nuts. I needed some 25x25mm cold rolled but the only stock on hand was 25x50. No problem, I can rip it down....Set the the speeds and feeds as recommend, dial in a 3mm DOC with a 60mm face mill and watch the blue chips fly......or should I say shrapnel, one nasty piece stuck to my neck
Even more impressive was a solid carbide end mill I tried. When I bought the Chipmaster tracer attachment from Gary at Eccentric Engineering, he said that now
I had a nice rigid mill I should have a go with some solid carbide end mills. He highly recommends Mari tools and gave me a used 3/8 end mill that had past its end milling life span but " is still really good for side milling, give it a try"
With my mill I can not run it as fast as it is designed for, so I dialled in the max of 1600rpm set the feed rate and took a 15mm deep side cut with 2mm radial DOC, climb cutting. The result, a nice big pile of yellow/blue chips on the vice and a super smooth surface finish.
Very happy with the mill and can't wait to test it out further.
Cheers
Piers
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