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Todays Project - What did you do today?
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12-21-2015, 11:03 AM
Guessing: It looks like the end of the cutter has made full contact, causing chatter. Not enough relief, the endmill has slipped in a collet, or there's a lot of flex in the mill. The full circle here is saying something:
I agree with Sunset. A couple of fixes to consider are 1) sandblast prior to HT and 2) skim with a fly cutter or HS end mill. Sandblasting is commonly used in mold making as the first step to polish cavities.
12-21-2015, 12:43 PM
(12-21-2015, 11:03 AM)Sunset Machine Wrote: Guessing: It looks like the end of the cutter has made full contact, causing chatter. Not enough relief, the endmill has slipped in a collet, or there's a lot of flex in the mill. The full circle here is saying something: Yes, the inserts basically sit flat against the work. I tried drilling through a thin piece of steel when I first got the cutter and stopped because of all the racket it made. http://www.metalworkingfun.com/thread-28...l#pid48450 The inserts definitely sit at different heights and the outer one does most all the cutting as far as I can tell. I'm thinking it's probably a combination of the mill slipping in the collet, and the Chinese cast iron made from noodles in my mill.  If a skim cut with HSS doesn't smooth things over, the next stop will be the blast cabinet. 
Willie
12-21-2015, 01:07 PM
Well another parcel arrived today ,a component tester .
![[Image: P1100738_zpsnns3awmy.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100738_zpsnns3awmy.jpg.html) ![[Image: P1100740_zpsygvjsmzg.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100740_zpsygvjsmzg.jpg.html) I welded  all the joints as per instructions . ![[Image: P1100763_zps4d7svnmg.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100763_zps4d7svnmg.jpg.html) I added the fly leads , Works a charm  ![[Image: P1100762_zpseibjyl9l.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100762_zpseibjyl9l.jpg.html) ![[Image: P1100761_zpsfvtuclwt.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100761_zpsfvtuclwt.jpg.html) ![[Image: P1100758_zpssclm3565.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100758_zpssclm3565.jpg.html) ![[Image: P1100749_zpsavmcnled.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100749_zpsavmcnled.jpg.html) ![[Image: P1100746_zpstdv6ylk7.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100746_zpstdv6ylk7.jpg.html) ![[Image: P1100745_zpsdgkdjycu.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100745_zpsdgkdjycu.jpg.html) ![[Image: P1100744_zpsvotqaadz.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100744_zpsvotqaadz.jpg.html) There are three pads to test SMD ,and it has a few other features to explore, not bad for £13 shipped . Rob 
12-21-2015, 01:40 PM
Wow that's a fancy bit of kit for 13 BP
 DaveH
a child of the 60's and 50's and a bit of the 40's
12-21-2015, 01:57 PM
Hi Dave
Not exactly high end ,just a bit of fun here it be putting out a PWM to the £15 scope I built .![[Image: P1100765_zpsflxb66eq.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100765_zpsflxb66eq.jpg.html) ![[Image: P1100766_zpst18gsa6q.jpg]](http://s1066.photobucket.com/user/RobWilson100/media/Electronics%20Projects/P1100766_zpst18gsa6q.jpg.html) Rob
12-21-2015, 02:13 PM
I think they are great, I was going to ask 'what are you going to build' but thought better of it
Dave
a child of the 60's and 50's and a bit of the 40's
12-21-2015, 02:24 PM
Very hush hush Dave classified
 I am just trying to get a better understanding of electronics ,the kits are cheap ,fun to build and even more fun to trouble shoot when they don't work and I dont care it I fry one as I would just build another . And they could be useful. Rob |
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