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Todays Project - What did you do today? - Printable Version

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RE: Todays Project - What did you do today? - Sunset Machine - 12-21-2015

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:

RE: Todays Project - What did you do today? - Dr Stan - 12-21-2015

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.

RE: Todays Project - What did you do today? - Highpower - 12-21-2015

(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-2824-post-48450.html#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. Blush

If a skim cut with HSS doesn't smooth things over, the next stop will be the blast cabinet. Big Grin

RE: Todays Project - What did you do today? - RobWilson - 12-21-2015

Well another parcel arrived today ,a component tester . Big Grin


[Image: P1100738_zpsnns3awmy.jpg]
[Image: P1100740_zpsygvjsmzg.jpg]

I welded Slaphead all the joints as per instructions . 

[Image: P1100763_zps4d7svnmg.jpg]


I added the fly leads , Works a charm Smiley-dancenana

[Image: P1100762_zpseibjyl9l.jpg]
[Image: P1100761_zpsfvtuclwt.jpg]
[Image: P1100758_zpssclm3565.jpg]
[Image: P1100749_zpsavmcnled.jpg]
[Image: P1100746_zpstdv6ylk7.jpg]
[Image: P1100745_zpsdgkdjycu.jpg]
[Image: P1100744_zpsvotqaadz.jpg]

There are three pads to test  SMD ,and it has a few other features to explore, not bad for  £13  shipped . 


Rob  Drinks

RE: Todays Project - What did you do today? - DaveH - 12-21-2015

Wow that's a fancy bit of kit for 13 BP
Smiley-eatdrink004 
DaveH

RE: Todays Project - What did you do today? - RobWilson - 12-21-2015

Hi Dave 

Not exactly high end ,just a bit of fun  Big Grin  here it be putting out a PWM to the £15 scope I built .


[Image: P1100765_zpsflxb66eq.jpg]
[Image: P1100766_zpst18gsa6q.jpg]



Rob

RE: Todays Project - What did you do today? - DaveH - 12-21-2015

I think they are great, I was going to ask 'what are you going to build' but thought better of it Big Grin 
Smiley-eatdrink004 
Dave

RE: Todays Project - What did you do today? - RobWilson - 12-21-2015

Very hush hush Dave  classified   Cool

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   Big Grin and I dont care it I fry one as I would just build another .   


And they could be useful.


Rob

RE: Todays Project - What did you do today? - DaveH - 12-21-2015

(12-21-2015, 02:24 PM)RobWilson. Wrote: Very hush hush Dave  classified   Cool

Rob

Jawdrop  I knew I shouldn't have asked Big Grin Big Grin Big Grin
Smiley-eatdrink004
DaveH

RE: Todays Project - What did you do today? - Highpower - 12-21-2015

You do manage to find some cool stuff Rob. Thumbsup

Had me scratching my head for a minute though. I thought there was an error on your display. 17428

But then I remembered that NPN means "Not Pointing iN"..... so you are good to go. Big Grin Big Grin Big Grin