#garfield Logs

Apr 21 2024

05:23 PM rue_shop2: Tom_L, feed rate
05:34 PM rue_shop2: 2 flue, straight, 1/8" but
05:34 PM rue_shop2: 2 flue, straight, 1/8" bit
05:34 PM rue_shop2: in aluminum
05:51 PM rue_shop1: nowonder this freaking mouse sucks, its optical
05:55 PM Tom_L: no spiral???
05:57 PM Tom_L: 4k rpm 6.5 ipm
05:57 PM Tom_L: .0008" per tooth
05:58 PM Tom_L: no spiral = no chip evacuation = gauld cutter = sad sad rue
06:18 PM rue_shop2: crap, i was goinjg really light and just lost the bit
06:22 PM rue_shop2: the bit must have been damaged, there was no stress on it at all
06:26 PM rue_shop2: maybe it did gald up, I was able to save the job, so I'll find out later
06:32 PM rue_shop1: I used 90mm/min, and its too slow
06:33 PM rue_shop1: I should make a feed rate adjuster for my nc spooler
06:42 PM rue_shop1: grbl has a way to adjust it, but I'v have to write a little extension for my program
06:42 PM rue_shop1: might do that sometime
06:42 PM Tom_L: where did you get an endmill with no spiral?
06:43 PM Tom_L: the chips can't go anywhere
06:43 PM Tom_L: wood i bet
06:44 PM Tom_L: 90mm/m @ what rpm?
06:45 PM Tom_L: CHIP LOAD!
06:45 PM Tom_L: 90mm/m @ 30k rpm you could start a fire
06:52 PM rue_shop1: 0.4mm/pass
06:52 PM rue_shop1: I have two of them, carbide
06:53 PM rue_shop1: probably wood
06:53 PM rue_shop1: rpm is 2.2k
06:54 PM rue_shop1: I only go to 6k
07:00 PM Tom_L: 2krpm @90mm/m sounds pretty close but it depends on the bit
07:01 PM Tom_L: .125" bits won't tolerate any vibration either
07:03 PM rue_shop1: the one I lost was a 1/4" shank carbide
07:03 PM rue_shop1: so I think it already had fractures
07:03 PM Tom_L: hmm
10:27 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1310419.jpg
10:27 PM rue_mohr: I forgot to take you a pic of the Y axis clamp
10:27 PM rue_mohr: that cut piece is truck leaf spring
10:27 PM rue_mohr: when its off, its curved.