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Type: Posts; User: jimluu

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  1. Replies
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    Sent you a PM

    Sent you a PM
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    I think bobArt does that.

    I think bobArt does that.
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    Can someone suggest a CAD/CAM?

    I'm building a cnc router with the purpose of making speaker baffles. Real simple stuff (beveled holes usually). Seems to me that it's kind of wasteful to buy a sophisticated cad/cam package, not...
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    What's a post processor and do I need one?

    I was reading my bobcad manual. There's a library of post processors. I'm not sure what these are and if I would need some custom made post processors if I make my own cnc router?
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    I think that when I got the cold call, I was...

    I think that when I got the cold call, I was under the impression that there was a 30 day trial period. Turned out that there's a 30 trial software. When the sales person calls you in the middle of...
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    Thanks for the response. What concerns me are...

    Thanks for the response. What concerns me are the reports of frequent crashes. I'm pretty good with computer hardware/software. Most of the time when a software crashes, its due to bad coding, not...
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    I saw that too. But reading through the forum,...

    I saw that too. But reading through the forum, my impression was that it has to not work somehow and you have to go through tech support before they give a refund. In my situation, I simply changed...
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    What's bobcad's return policy?

    I own bobcad 21, bought last year, not even opened yet. I got a sales call for a good price on bobcad 22 and bought that last week. Just arrived today. I should have done my research. Seems...
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    Thanks for all your great help and suggestions. ...

    Thanks for all your great help and suggestions. I'm leaning towards picking up some 8020 garage items when they go on sale to use for the crucial parts, then use wood to build the not so crucial...
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    Thanks donnelson. I just sent you a PM.

    Thanks donnelson. I just sent you a PM.
  11. Replies
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    707

    No one to help with a metal table.

    Hi. I've been on this forum for a while. I've been planning my cnc router machine for years. I've got 6' long THK rails for th x-axis, 44" thk rails for the y- axis and 15" rails for the z axis. ...
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    1,190

    Misumiusa bun25 and bsw25

    Misumiusa bun25 and bsw25
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    thanks. I found a 1" bearing that would fit in...

    thanks. I found a 1" bearing that would fit in the bearing block. I guess I'm still not sure about how tight a bearing should fit. Do you have to heat/freeze to make it fit? or are they supposed...
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    Thanks for the quick response. My ball bearing...

    Thanks for the quick response. My ball bearing is 6fth long, can't stick in freezer. Will dry ice work? Will a curling iron work to heat up the bearing? I take it that once fitted, it's not...
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    How to mount bearings?

    I've bought a set of mounted bearing blocks for my ball screw. The fit seems really tight. Before I ruin it by forcing it onto the shaft, does anyone know of a way to slide the bearing without much...
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    My bearing blocks just arrived from musumi today....

    My bearing blocks just arrived from musumi today. I'm not sure how it fits. On the PDF file of my ballscrew, the fixed end of my ballscrew is 25mm and the support end is 1". Misumi doesn't make 1"...
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    Thanks for the input guys. I'm thinking hard on...

    Thanks for the input guys. I'm thinking hard on the counterweight system. Constant tension spring seems interesting. I've never use them before...which is a good excuse to look into them now. ...
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    I've ordered all the major parts and am about to...

    I've ordered all the major parts and am about to build the frame. Would square metal tubing be better than 8020?
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    btw..if you think about buying anything from...

    btw..if you think about buying anything from them, check their return policy carefully. I made a slight error....took me 6 phone calls to fix. Even then they have a very difficult attitude. So,...
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    Misumiusa 30% off sale

    I'm not affiliated with misumi in any way. I've been eying their catalog for a while because that have the lowest priced bearing support blocks anywhere. Anyways, I noticed that they have 30% off...
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    Thanks guys. I'm a bit confused about the...

    Thanks guys. I'm a bit confused about the necessary bearings for my x-axis ballscrew. I made an error in my earlier post. My ballscrew is actually 1.5" with a .250 lead. The ends are machined...
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    Thanks again Brian. I would appreciate the...

    Thanks again Brian. I would appreciate the diagram you'd mentioned. If you know a good source I'd appreciate that as well. Misumiusa seems least expensive so far, but $225 for bearings alone seems...
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    I wonder if having 75-100lbs of preload due to...

    I wonder if having 75-100lbs of preload due to the vertical arrangement have signifcant impact on the wear of the ballscrew bearings and mounting bearings?
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    Brian, Thank you for your help. I would never...

    Brian,

    Thank you for your help. I would never have figured all that out by myself. Seems like the 1200oz motor that I have in mind should work ok. I'm going to hire out a local company for the...
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    If anyone out there knows how to calculate torque...

    If anyone out there knows how to calculate torque requirements...please help. My gantry will likely weight 75lbs, but lets use 100lbs to err on the safe side. My ballscrew is 2" in diameter and has...
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    Thanks for the response! I've thought about a...

    Thanks for the response! I've thought about a horizontal design, but if I can make a vertical design work, I'll save half the space. I'm planning to use a NEMA 34 motor with around 1200oz of torque...
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    Anyone built a vertical cnc router?

    Hi. I've been planning a 4x8 cnc router for quite some time now. It just dawned on me that I may not have enough space to have a horizontal table in my shop. Has anyone tried an upright design? I...
  28. The above is basically what I need to finish my...

    The above is basically what I need to finish my project. I would like someone to come by, take a look and give me a quote..Just reading my own post, I'm not asking for free help :)
  29. RFQ: Help me finish my cnc router in Colorado Springs

    Hi. I'm looking for help with some aluminum/metal parts to help me complete my cnc router project. I have the rails for all the axis. I'm planning to build a box out of 8020 material for the x...
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    Poll: Please excuse my ignorance. I'm still confused...

    Please excuse my ignorance. I'm still confused what your product does. Perhaps if you put it in terms of what popular item it replaces, I might have a better understanding. For $699, it replaces...
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