milling CU - problems [update with pictures]
When i mill, the CU don't fly away, it just move out of the way.
Hmm...hard to explain...some CU fly away, but much gets pushed out of the sides of the endmill. You know what I mean? Hope so. Its not pretty at all. My digicam is not here right now so I can't take a pic :( |
That's pretty normal for copper, it's a pita to mill. Do you have a machinist's handbook to look up the speeds and feeds for copper? That'd be my suggestion. Maybe someone who has a copy can reply with the numbers you need. :)
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morphling has a diagram...well...it sucks to mill CU thats for sure...
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Yeah just think what it does to my tiny CNC mill! Have to slow down the feed rate untill the shavings are bigger. Copper bites to mill but I can do it on my mill if I go slow enough with a good endmill.
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Another question: What shall I use to solder with? Silver or regular?
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Doesnt matter too much... I just use plumbing solder.
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How sharp are your bits, looks like the are getting dull (is that the word). If you took new sharp bit this shouldn't be a problem, except like JD said with tiny bits, those are tricky, you need very high rpms.
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I used a 10mm bit, the one I got with the mill, yes its used and maybe quite unsharp.
I think I used very low rpm...dunno... but the same thing happend with my new 20mm bit...well well |
Hmm....sounds like you need to go higher in your rpm's.....
Take a look at this: http://forums.procooling.com/vbb/sho...&threadid=4490 |
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So, I didn't use any lubrication, so what? It didn't get hot at all.
Here is how it end up like: http://www.hydroplate.netfirms.com/ugly1.jpg http://www.hydroplate.netfirms.com/ugly2.jpg this shit stinks. really. |
Don't despair!
I'm pretty sure that if you have next 10 made, the last one would look much better than this one (btw, this one looks good for a start), just give the patience some time and effort. Maybe to go in smaller steps while milling, to gain more control on the straight cuts...:shrug: Keep it up!!!;) |
Thats copper for ya! Hard as sh!t to machine!! Looks good, once you deburr it!
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HEY! the camera is fooling you!
the channels are COMPLETLY straight! But what is wrong? You just say that its going to be better. I can't do it any better if you dont tell me what Im doing wrong! Im so pissed right now...not at you guys but that everything ALWAYS goes wrong!!! :( :( :( :( :( :( :( :( :( :( :( :( :( :( :( :( :( :( :( |
OOOPS, sorry man, I was looking into the pics and picked wrong conclusion. Burred edges lead me to it.
Sorry...:( |
ChrioN
So hows the machining going? I want some updates to see some progress. I got the check for my 600 pound manual mill. Should have that by next week :) |
Hmm..I have posted very many pictures here:
http://forums.procooling.com/vbb/sho...&threadid=4519 But as I did'nt get any responses, I quit. But if you want more pics in progress i'll gladly post some more! :) |
Quote:
:D Bob |
I've found that keeping a steady stream of air on the bit (where it's cutting) to blow the chips away helps ALOT with that, so much so infact that I didn't have any burring, melting, or any other problems like that.
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Nick C: I allways do that. Doesn't help though.
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What params (spindle, feed, stepdown) were you using when you cut that? When I was doing the machining thing a lot, I found that it was usually more efficient to go smaller stepdown, faster spindle and feed. But it depends on your tooling, of course...
Bob |
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