|
Post by VGCustomShop on Mar 21, 2018 0:03:36 GMT
Looking for advice and opinions as I have very little experience with metal - the bridge on the left needs to get six slots in front of the six holes like the bridge on the right - is this possible with the carve king? Need to install synth access to this tele bridge - each bridge saddle has a wire leading from its front/bottom side. Thanks!
|
|
|
Post by Bruce on Mar 21, 2018 2:57:29 GMT
Somebody posted a video cutting titanium, so this should be no problem. Check the the feed and speeds.
|
|
|
Post by VGCustomShop on Mar 21, 2018 8:08:28 GMT
Somebody posted a video cutting titanium, so this should be no problem. Check the the feed and speeds. Thanks - wish me luck - never cut metal. Will check the calculator for feeds and speeds. There is no listing for "steel" in the calculator. Shows the tool path in Fusion (left) and modeled part in MOI (right). Attachment Deleted
|
|
|
Post by Bruce on Mar 21, 2018 20:49:10 GMT
|
|
|
Post by Derek the Admin on Mar 22, 2018 4:06:52 GMT
I’m looking at it on a phone right now, so it’s kind of hard to tell... but is that steel or brass? Looks to be brass. If so I’d say use similar settings to aluminum. If it is steel use half the depth per pass and half the feedrate the calculator gives for aluminum. It has to have some coolant. Shin the work piece up some. It’s more rigid higher up in Z than when reaching all the way to the bed.
|
|
|
Post by VGCustomShop on Mar 23, 2018 3:22:03 GMT
I’m looking at it on a phone right now, so it’s kind of hard to tell... but is that steel or brass? Looks to be brass. If so I’d say use similar settings to aluminum. If it is steel use half the depth per pass and half the feedrate the calculator gives for aluminum. It has to have some coolant. Shin the work piece up some. It’s more rigid higher up in Z than when reaching all the way to the bed. Hi Derek - it looks brass because of the gold/chrome like plating. It is most likely low carbon steel. I tried cutting some yesterday - it's hard. I had the router at 24000 and slowed the feed down to 10 with multiple depths of .06 stepover - and it got through - don't know if one bit can handle six slots. Used 3 in 1 oil while it was cutting. The steel is .108 thick. The settings may not be correct - but it seemed to work. Suggestions are appreciated.
|
|
|
Post by Derek the Admin on Mar 23, 2018 14:11:26 GMT
Speed is too fast. Cut that RPM down some and your tool life will improve.
|
|
|
Post by VGCustomShop on Mar 23, 2018 20:35:43 GMT
Speed is too fast. Cut that RPM down some and your tool life will improve. OK will do - around 18000? Also, what should the stepover and feed rate be?
|
|
|
Post by Derek the Admin on Mar 24, 2018 2:33:09 GMT
I'd make the stepover pretty small: maybe 30% of tool diameter if you can. I don't often cut steel on the Carve King (as opposed to aluminum, which I cut a fair amount of), so I don't have many precise recommendations. My best recommendation is to base your settings on what the calculator recommends for aluminum (on conservative setting, see millrightcnc.info). Use half of the recommended depth of cut and half the feed rate. For instance, if the calculator recommended 1000mm/min and 0.5mm depth of cut for aluminum I would use 500mm/min and 0.25mm depth of cut.
|
|
|
Post by VGCustomShop on Mar 24, 2018 3:23:08 GMT
I'd make the stepover pretty small: maybe 30% of tool diameter if you can. I don't often cut steel on the Carve King (as opposed to aluminum, which I cut a fair amount of), so I don't have many precise recommendations. My best recommendation is to base your settings on what the calculator recommends for aluminum (on conservative setting, see millrightcnc.info). Use half of the recommended depth of cut and half the feed rate. For instance, if the calculator recommended 1000mm/min and 0.5mm depth of cut for aluminum I would use 500mm/min and 0.25mm depth of cut. Thanks much - will do.
|
|
|
Post by VGCustomShop on Mar 24, 2018 8:12:31 GMT
I'd make the stepover pretty small: maybe 30% of tool diameter if you can. I don't often cut steel on the Carve King (as opposed to aluminum, which I cut a fair amount of), so I don't have many precise recommendations. My best recommendation is to base your settings on what the calculator recommends for aluminum (on conservative setting, see millrightcnc.info). Use half of the recommended depth of cut and half the feed rate. For instance, if the calculator recommended 1000mm/min and 0.5mm depth of cut for aluminum I would use 500mm/min and 0.25mm depth of cut. only milling six slots .130" wide, .306" long and .108 deep - a bit nervous cutting steel but if it works it will save some bucks - local machinest would charge more than the bridge is worth.
|
|
|
Post by VGCustomShop on Mar 27, 2018 3:46:11 GMT
I'd make the stepover pretty small: maybe 30% of tool diameter if you can. I don't often cut steel on the Carve King (as opposed to aluminum, which I cut a fair amount of), so I don't have many precise recommendations. My best recommendation is to base your settings on what the calculator recommends for aluminum (on conservative setting, see millrightcnc.info). Use half of the recommended depth of cut and half the feed rate. For instance, if the calculator recommended 1000mm/min and 0.5mm depth of cut for aluminum I would use 500mm/min and 0.25mm depth of cut. Here's the finished article - the slots cut a tad crooked - really should put a spindle on this machine for cutting metal. Next time will raise the z a bit higher and use a bit designed for metal. But for the first try very happy with the results.
|
|
|
Post by Derek the Admin on Mar 27, 2018 4:17:29 GMT
Nice job Neil. Should be even easier with the Power Route, which I think we'll be sending to you tomorrow knock on wood.
|
|
|
Post by VGCustomShop on Mar 27, 2018 5:54:13 GMT
Nice job Neil. Should be even easier with the Power Route, which I think we'll be sending to you tomorrow knock on wood. Thanks very much - no rush I know you have a lot going on.
|
|
|
Post by VGCustomShop on Mar 28, 2018 8:34:41 GMT
Nice job Neil. Should be even easier with the Power Route, which I think we'll be sending to you tomorrow knock on wood. Here's why the slots needed to be cut - each saddle has a wire running from under it - when the instrument is intonated they are set to different distances from the back of the bridge - which is called compensation. This is why the slots are long - enabling the saddles to be moved forward or back without damaging the little wire. Each wire goes to an analog to digital converter enabling the guitarist to drive keyboards or any other digital midi capable module - guitar synth is essentially a pitch to midi converter. The guitar body (profile pic), pickguard and bridge were all either made or modified with the Carve King!
|
|