MEBCWD Posted June 27, 2017 Report Share Posted June 27, 2017 1 minute ago, Stick486 said: WHY?!?!? That's a good question Stick but I don't know what the holdup is !!!! Link to comment Share on other sites More sharing options...
Stick486 Posted June 27, 2017 Report Share Posted June 27, 2017 9 minutes ago, MEBCWD said: That's a good question Stick but I don't know what the holdup is !!!! after all we are being patient... very patient... MEBCWD 1 Link to comment Share on other sites More sharing options...
Grandpadave52 Posted June 27, 2017 Report Share Posted June 27, 2017 12 minutes ago, MEBCWD said: That's a good question Stick but I don't know what the holdup is !!!! 1 minute ago, Stick486 said: after all we are being patient... very patient... 1 hour ago, difalkner said: I've been out of pocket for a couple of hours and I thought I would post my CNC build right off the bat... is it ready now? Closer? Here, occupy your time until it's up & running... MEBCWD 1 Link to comment Share on other sites More sharing options...
MEBCWD Posted June 27, 2017 Report Share Posted June 27, 2017 Thanks for the ice cream! I needed that, it's lunch time here! Grandpadave52 1 Link to comment Share on other sites More sharing options...
John Morris Posted June 27, 2017 Author Report Share Posted June 27, 2017 1 hour ago, difalkner said: I've been out of pocket for a couple of hours and I thought I would post my CNC build right off the bat... is it ready now? Closer? Man the pressure is on! MEBCWD 1 Link to comment Share on other sites More sharing options...
Stick486 Posted June 27, 2017 Report Share Posted June 27, 2017 23 minutes ago, MEBCWD said: Thanks for the ice cream! I needed that, it's lunch time here! clearly not enough of either... MEBCWD 1 Link to comment Share on other sites More sharing options...
Stick486 Posted June 27, 2017 Report Share Posted June 27, 2017 1 minute ago, Stick486 said: clearly not enough of either... oh John... while we have your attention... about that darkening those light shades of invisible gray... just saying... MEBCWD 1 Link to comment Share on other sites More sharing options...
MEBCWD Posted June 27, 2017 Report Share Posted June 27, 2017 7 minutes ago, Stick486 said: clearly not enough of either... I thought that ice cream cone was bigger than that, I had to eat a sandwich too and I came back for donuts and they were all gone. I guess there are just too many people waiting in anticipation of the new CNC forum and the CNC category in the downloads section. Grandpadave52, schnewj, Stick486 and 1 other 4 Link to comment Share on other sites More sharing options...
MEBCWD Posted June 27, 2017 Report Share Posted June 27, 2017 honesttjohn you need to get busy cutting those files. You don't have enough time to wait around here for the new CNC forum to open. honesttjohn 1 Link to comment Share on other sites More sharing options...
Stick486 Posted June 27, 2017 Report Share Posted June 27, 2017 17 minutes ago, MEBCWD said: I came back for donuts and they were all gone. yur learning... never turn your back on a donut and to keep them w/ you at all times ... be wary of distractions too.. MEBCWD and Grandpadave52 2 Link to comment Share on other sites More sharing options...
honesttjohn Posted June 27, 2017 Report Share Posted June 27, 2017 (edited) Mike -- I'm trying to size and put together #2 right now -- that's the one she wants (the two big bass one). Got the 1st file done and saved. Of course, she wants the other one. Gonna try the Vcarve eagle on the book next, now that I could retrieve it. Just waiting for the current cut to get done so I can try the book. Thanx again. You're the best. You technical mechanical geeks can have the other CNC Forums. That's out of my league. Plug and play, insert thumbdrive, hit go. That's about the extent of my CNC expertise. Edited June 27, 2017 by honesttjohn Grandpadave52 and MEBCWD 2 Link to comment Share on other sites More sharing options...
MEBCWD Posted June 27, 2017 Report Share Posted June 27, 2017 22 minutes ago, honesttjohn said: Mike -- I'm trying to size and put together #2 right now -- that's the one she wants (the two big bass one). Got the 1st file done and saved. Of course, she wants the other one. Gonna try the Vcarve eagle on the book next, now that I could retrieve it. Just waiting for the current cut to get done so I can try the book. Thanx again. You're the best. You technical mechanical geeks can have the other CNC Forums. That's out of my league. Plug and play, insert thumbdrive, hit go. That's about the extent of my CNC expertise. On the open book do you know how to distort the text and the eagle so they follow the flow of the page or do you need a tutorial? I don't have time right now to make one but I can send you a ink to one. Link to comment Share on other sites More sharing options...
honesttjohn Posted June 27, 2017 Report Share Posted June 27, 2017 I'm gonna play with it. Want it to cut right first. I'll play with the distort thing a little. although I know it won't be right. I'll let you know MEBCWD 1 Link to comment Share on other sites More sharing options...
difalkner Posted June 27, 2017 Report Share Posted June 27, 2017 While we're patiently awaiting the grand opening of the CNC area, this afternoon I have someone bringing four pieces of 3/4" Plexiglas to cut circles out of for speakers (car audio). He has a template and it seems like he said they want 12" woofers in these and then they'll light them from the sides. I have a 0 flute 1/4" bit and my plan, based on very little research, was to cut at 18,000 rpm, 150 ipm, and 1/4" depth of cut each pass. Is that in the ballpark? They're going to do the polishing but I want to leave them as clean an edge as possible. He's also looking for some scraps for me to work on before I cut these. Scraps will be 1/2" but that's close enough. David Link to comment Share on other sites More sharing options...
honesttjohn Posted June 27, 2017 Report Share Posted June 27, 2017 David, They make bits for plastic that won't chip. Cut real clean. A normal wood bit will chip, at least in acrylic. Link to comment Share on other sites More sharing options...
difalkner Posted June 27, 2017 Report Share Posted June 27, 2017 Just now, honesttjohn said: David, They make bits for plastic that won't chip. Cut real clean. A normal wood bit will chip, at least in acrylic. Yes, that's what I have, John. The 0 flute 1/4" bit is made for plastic. honesttjohn 1 Link to comment Share on other sites More sharing options...
Chips N Dust Posted June 27, 2017 Report Share Posted June 27, 2017 @John Morris, It looks like the CNC guys are having a hard time waiting- they are already talking "shop" about CNC stuff. I am really looking forward to the new forum. I hope I will be able to learn enough about them to see if I want to dip a toe into that world. They (CNC machines) have intrigued me for a while Stick486 and Grandpadave52 2 Link to comment Share on other sites More sharing options...
honesttjohn Posted June 27, 2017 Report Share Posted June 27, 2017 Kelly, You don't have to be a mechanical and electrical genius or CAD geek now. You can get a machine already built, customer support (if you buy here and not China), Software that has never done what it does now, how to tutorials, and more info than you'd probably want from your newfound friends here. Uses are endless. Do what you want with it and proceed at your own pace. I'm a retired truckdriver who just graduated from a Blackberry to an early model Iphone, and I've actually made a few decent things, some of which have sold. A fair warning though ............. it takes a lot of time and can be somewhat addictive. When all these smarties post their builds and use all their "above us common mortals" terms I'll do mine in 4 pics. (1) Upacked on the table, (2) wires plugged in, (3) thumbdrive plugged in and turned on, and (4) look at all that dust. Chips N Dust, Grandpadave52 and difalkner 3 Link to comment Share on other sites More sharing options...
MEBCWD Posted June 27, 2017 Report Share Posted June 27, 2017 (edited) 2 hours ago, difalkner said: While we're patiently awaiting the grand opening of the CNC area, this afternoon I have someone bringing four pieces of 3/4" Plexiglas to cut circles out of for speakers (car audio). He has a template and it seems like he said they want 12" woofers in these and then they'll light them from the sides. I have a 0 flute 1/4" bit and my plan, based on very little research, was to cut at 18,000 rpm, 150 ipm, and 1/4" depth of cut each pass. Is that in the ballpark? They're going to do the polishing but I want to leave them as clean an edge as possible. He's also looking for some scraps for me to work on before I cut these. Scraps will be 1/2" but that's close enough. David David Using a cut depth of 0.25 with a 0.25 0 flute bit and holding the spindle speed of 18,000 rpm I get a feedrate of 75.1 ipm If i hold the feedrate at 150 ipm for the 0.25 0 flute bit then I get a spindle speed of 14,000 and a depth of cut at 0.0922 Hope that gives you some where to start. Not all acrylics are created equal. Good thing you have scrap to test on. Edited June 27, 2017 by MEBCWD difalkner 1 Link to comment Share on other sites More sharing options...
MEBCWD Posted June 27, 2017 Report Share Posted June 27, 2017 David if you want to figure depth of cut at 0.125 with the 0.25 0 flute bit I get spindle speed at 18,150 rpm and feed rate of just over 160 ipm. That is close to the speeds you were looking at but half the depth of cut. difalkner 1 Link to comment Share on other sites More sharing options...
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