Got a new toy. tool., JET Hobby Mill (914-8 and r/c wheels on my list!) |
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Got a new toy. tool., JET Hobby Mill (914-8 and r/c wheels on my list!) |
RJMII |
Jan 20 2010, 09:29 PM
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#1
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Jim McIntosh Group: Members Posts: 3,125 Joined: 11-September 07 From: Sandy, Utah Member No.: 8,112 Region Association: None |
For Christmas I scored a Jet Hobby Mill to go with all of my stepper motors and CAD-CAM software and 3-d scanner.
I still need to get the correct collet and end mills; but I'm quite excited to get started machining some parts. Does anyone have a 914 emblem I can borrow? Someone was wanting a 914-8 machined, and I need a 914 to scan and model to get to cutting out some aluminum parts. Also; does anyone have an R/C 914 setup? I'm planning on machining the Fuchs wheels out of aluminum and need someone to help me out with getting the offset and diameter just right. I'm also thinking of machining a 914-World emblem for the backs of our cars out of aluminum. If I do go for that, I'll snail one off to Eric first, get his opinion and stamp of approval. I've been studying online all of this stuff on CNC and machining and am quite excited to actually get going with some 'on hands' stuff! Any other suggestions, for things to carve out of some aluminum? Attached image(s) |
Brodie |
Jan 23 2010, 04:59 PM
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#2
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Newbie Group: Members Posts: 39 Joined: 28-October 09 From: Kansas Member No.: 10,990 Region Association: None |
RJMII, I would be interested in seeing more pictures of your stepper motors hooked up to your mill. Also, what CAD/CAM package are you using?
There are a few ways to check your spindle to see if you are rigid enough to use carbide. Do you have a dial indicator and stand? If you do you can set the magnetic base on the table. Set the dial up to your tool installed in a collet. Spin the spindle by hand see how far out you are. Also push the spindle around with your hand and see if there is any sideway movement further up in the head. If your spindle is not "true" than precision machining can not be achieved very easily, and carbide will tend to chip or break on you. Never put anything in a drill chuck except drills. No endmills, fly cutters, etc. Use collets for those. Speed and feed is very important to learn expecially running it CNC. The machine doesn't care if you are running or feeding too fast. It'll either break the tool or spit the part out at you. Which brings me to another point. Always secure your part to machine. Nothing will ruin your day or your life like having a chunk of steel fly out at you. I don't know how much you know about machining, but I thought I'd throw these points out. Have fun with your mill. If you need help I will try my best to advise. |
RJMII |
Jan 23 2010, 10:00 PM
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#3
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Jim McIntosh Group: Members Posts: 3,125 Joined: 11-September 07 From: Sandy, Utah Member No.: 8,112 Region Association: None |
RJMII, I would be interested in seeing more pictures of your stepper motors hooked up to your mill. Also, what CAD/CAM package are you using? There are a few ways to check your spindle to see if you are rigid enough to use carbide. Do you have a dial indicator and stand? If you do you can set the magnetic base on the table. Set the dial up to your tool installed in a collet. Spin the spindle by hand see how far out you are. Also push the spindle around with your hand and see if there is any sideway movement further up in the head. If your spindle is not "true" than precision machining can not be achieved very easily, and carbide will tend to chip or break on you. Never put anything in a drill chuck except drills. No endmills, fly cutters, etc. Use collets for those. Speed and feed is very important to learn expecially running it CNC. The machine doesn't care if you are running or feeding too fast. It'll either break the tool or spit the part out at you. Which brings me to another point. Always secure your part to machine. Nothing will ruin your day or your life like having a chunk of steel fly out at you. I don't know how much you know about machining, but I thought I'd throw these points out. Have fun with your mill. If you need help I will try my best to advise. Brodie; Thank you for the info! That is very much appreciated. Right now it has a drill chuck setup. Tonight my uncle, my dad, my wife and I were playing around with a dremel bit and some pine. We made grooves. =o) The machine came with clamps and a quick vise, and we did indeed have the piece of wood secured to the mill. It was quite fun! The machine seems quite sturdy for its size, and I'm looking forward to figuring out which parts I need to order next to set it up for milling. The steppers are in storage still, and I was looking over the machine to see how to incorporate them into the whole equation. I have bobCAD; I picked it up for $325 because I'm a hobby user and caught their latest ploy to sell software. Hopefully the software is as good as the guy that was selling it. |
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