I’m going to say static - if it was a runner you would know.
Impressive machining skills nonetheless.
Dave
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Bear in mind if you are planning on using V blocks to create your accurate 45 degree angle that a V block isn't necessarily a 90 degree V shape. It's...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralA thing I learnt during my time at a startup: Make a decision. Then at least you will find out quickly if it was a bad decision. Even a bad decision is...
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When I made a custom stock for my target rifle I used the mill with a 30mm ballnose router bit to cut the inletting. Used the mill flat out (4500rpm)...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralThose are rubbish. If the op is concerned about a Proxxon then these are 10x worse.
I bought one as a sacrificial xy for a tool grinder idea....
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralJust spotted a gorgeous Sixis 101 : https://www.nielsmachines.com/en/six...cessories.html
Only as much as a car,...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in General14 or 15mm x 1 bar, 45degree chamfer bit - if your cheap a carbide router one.
clamp bar down on a spoil board with one edge parallel to the long...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralFor a 4” long cut I would probably just use a hacksaw. Then file off the rough edges, maybe rub on some wet and dry paper on a flattish piece of steel...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in Generalship69 That was a 2 second google search for small high speed mills. They exist, they are usually CNC.
Small Mills for steel exist. You can (I...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralHigh spindle speeds on none tiny cutters requires fast feeds to give correct chipload. Manual handles can’t keep up. So mostly high speed spindle =...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralMany mills have very high rpm spindles.
Speed with power and rigidity gives the ability to shift metal rapidly.
Many hobby cnc mills are...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralTheoretical cutting speeds are just that - theory. They are usually calculated for most economical metal removal based on tool wear, machine capability...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralI’d say 3 thou is more than a little runout...
Machine tools have improved massively over time.
My other mill is 1986, top speed is 4500...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralManual machine tools are obsolete in the general world.
There are edge cases (as usual). Hobbies is one of those.
Small lathes and small mills...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralHow big?
My “large flat surfaces” are not your “large flat surfaces” - I have several machines (toolaholic) -the “proper” mill can do...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralWay back in 2008 I initially converted this MF70 to CNC (https://bbs.homeshopmachinist.net/fo...is-cnc-project)
The tooling...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralMostly it was runout. The new spindle is ER16 direct with about 1/10 of the runout of the Proxxon one.
The Proxxon head is also limited in its max...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralTest cut in cold rolled steel, 2mm (IIRC) carbide endmill, something like 12krpm.
...
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small.planes replied to Seeking high-precision milling machine for mild steel, better than Proxxon MF70(!)in GeneralMF70 based, 750W spindle, upto 24k rpm. Wouldn’t want to use it by hand, but fortunately I cnc’d it. High spindle speeds need a consistent feed especially...
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That’s understandable, there was pie and good company.
Dave...
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