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CNCzone.com-The Ultimate Machinist Community - www.cnczone.com | Site profile
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Posting activity table on CNCzone.com-The Ultimate Machinist Community:
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3 Months
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1,634
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5,882
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15,737
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3,728
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39,225
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Rating - The position measured by activity among all forum sites tracked by BoardReader.
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CNCzone.com-The Ultimate Machinist Community posting activity graph:
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Top authors on CNCzone.com-The Ultimate Machinist Community during last week:
user's latest post:
Can linear ball bearings (open...
Published (2009-11-19 16:19:00)
Hi You are missing the information on the resistance to tipping moments and you will have to ask for this information. The loads quoted are in line with the axis of the rails you need the ability to resist loads at right angles i.e. lifting the bearing off the rail. These rails are often used in pairs being placed back to back on opposite sides of the suport frame and pre loaded to give the desired resistance to tipping as well as improving...
user's latest post:
Just got my C4 lathe! - Page 5 -...
Published (2009-11-19 23:26:00)
Originally Posted by TMc I just purchased a C4. It seemed to work perfectly out of the box, but then a week later I can't seem to get eh spindle going. When I turn it on the display lights up it registers 0000 and forward and stop, but then I push the start button and the up arrows and nothing. Am I missing something? Tony Hi Tony. Unplug it. Open the electronics bay behind the headstock. You will see a green terminal strip. Check that...
user's latest post:
Hi and a couple questions....
Published (2009-11-19 19:57:00)
Whoa, gotta disagree on the face milling. Love my face mills. Just got my third one and it is a doozy. See my web site for a review of the 3" 45 degree Glacern face mill: http://www.cnccookbook.com/index.htm Just search that page for "Glacern" if it isn't at the top of the blog. Cuts real sweet! Cheers, BW
user's latest post:
History of CNC
Published (2009-11-19 16:43:00)
I retrofitted a couple of those vintage, the core memory reminds me of one run with a PDP8, you could actually 'see' 1 bit of memory! Al.
user's latest post:
Help diagnosing 6TB axis problem
Published (2009-11-18 18:12:00)
Does it leave a bad finish turning or facing or both? First guess would be bad axis bearings, followed by a bad/shorted motor. Did you blow out the motor with air when you did the brushes?.
user's latest post:
Coolant Maintenance - Page 2 -...
Published (2009-11-19 22:57:00)
Originally Posted by MadMax ....How long do you guys get on your coolant before it goes irrecoverably bad? I was worried that I was going to have to dump mine a few weeks ago, but the aerator turned things around in a day. The improvement was so fast that I'm hoping that I'll get a lot longer on this first charge. Sorry for all the words. I'm new at this. My first machine and we got it this past summer. My first piece of gear...
user's latest post:
Build Thread Another DIY drum...
Published (2009-11-19 22:00:00)
Originally Posted by johnmac I like the looks of the Sand Flee. The fence is a good idea that I will keep in mind while building. I think I will build the base to enclose the motor. I have several motors to choose from. I wouldn't mind finding a smaller diameter motor for the small roller. CarveOne, are you using a 1725 rpm motor? Do you think the surface speed of the drum is about right? John The fence will be a necessary addition....
user's latest post:
Weiss WMD30LV conversion project...
Published (2009-11-19 12:47:00)
Originally Posted by LongRat No, the blocks are very cheap and the bearings themselves seem to be nice. For the price, it would be a great deal for the bearings alone - without the blocks. I don't have a problem with the blocks at all, just that you must strip them out and reassemble them before use. I actually found a big chunk of bamboo in one of the bearings! Also, mine were assembled the wrong way round too. I recently received a set...
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Top 10 active forums on CNCzone.com-The Ultimate Machinist Community during last week:
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Latest active threads on CNCzone.com-The Ultimate Machinist Community:
Started 1 day, 4 hours ago (2009-11-20 23:37:00)
by pofo
What did you decide to do? I have a similar situation.
Started 3 days, 19 hours ago (2009-11-18 09:17:00)
by kawazuki
From my limited knowledge I wouldn't bore a hole that big with an end mill or certainly not one that big in one go! I'd use a centre drill first, then proper twist drill out to 11/16" say then use the boring bar or if you're confident the mill is tight, use a 3/8" end mill and circle pocket out to 11/16" then finish as above.
Started 1 day, 3 hours ago (2009-11-21 01:29:00)
by carvemylog
Not sure about the random movements, but there's a couple things you can do about the random limit switch hits. Under the general config menu you can change the debounce amount up. I'm running 10,000 on the debounce.
When I first started running my machine it was almost unusable, it would hit false limits about every 10 seconds. Adjusting the debounce helped, but what really helped was ...
Started 1 day, 3 hours ago (2009-11-21 01:17:00)
by hoss2006
do you mean a drill chuck?
drill chucks can't handle the side loads of milling.
I've seen a yahoo at work pop a chuck off the taper trying to mill with it.
the only time you should use an endmill in a drill chuck is for counter boring a hole,
and that's if you don't care much about it blowing oversize from runout.
stick to collets, endmill holders or TTS for milling.
Hoss
Started 2 weeks, 4 days ago (2009-11-03 20:48:00)
by rolfinator2002
Which model, I might have it?
Started 1 day, 3 hours ago (2009-11-21 01:01:00)
by jmelson
Originally Posted by ogesII
I picked up an old M-head this weekend. Using the course quill feed requires about 15lbs of breakaway and 12lbs continuous pull at the end of the 8" factory lever. This seems stiff to me. I am thinking I should ...
Started 2 days, 14 hours ago (2009-11-19 13:35:00)
by keebler303
Larry
I am in the process of switching my bridgeport over to servos. I would have all three reactors from my mill available. I have all the parts ready, I just haven't had time to do it, and I don't want to start taking it apart until I know I have time to get it back together. If you're not in a huge hurry, shoot me a PM and when I get things apart I can send you one.
If you are really...
Started 1 month ago (2009-10-16 14:11:00)
by neurosis neurosis is offline
Can someone please explain this to me in simple terms. Is this the same as G5.1 Q1 or similar? What is the difference?
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Hot threads for last week on CNCzone.com-The Ultimate Machinist Community:
Started 3 years, 7 months ago (2006-04-09 12:30:00)
by lakeside
here one more I found 8" x 24" riser block 3.75 center distance for slot
Started 6 days ago (2009-11-16 04:13:00)
by hoss2006
I've used Autocad for years but just for 2D DXF's to use with my CAM programs .
The new versions are fully 3D capable. Plenty of cheaper and easier to use programs.
The Vectric and Meshcam programs are very easy to use for CAM.
For CAD you have to decide if you need 3D capabilities or not.
DXF creation should be a must.
Hoss
Started 1 week, 1 day ago (2009-11-14 01:40:00)
by tumutbound
It would be a good next step for my mill but I hate to think how much it would cost to ship down under!
Started 12 months ago (2008-11-25 13:03:00)
by matth
Nobody had their hands on one of these then?
If I buy one (see if I can wrestle the money off the wife) then I'll post some information.
I am going to contact the seller and see if they can provide some more pictures and info.
Started 3 days, 16 hours ago (2009-11-18 11:35:00)
by ger21
Do you have a machine built yet?
Started 3 days, 19 hours ago (2009-11-18 09:17:00)
by kawazuki
From my limited knowledge I wouldn't bore a hole that big with an end mill or certainly not one that big in one go! I'd use a centre drill first, then proper twist drill out to 11/16" say then use the boring bar or if you're confident the mill is tight, use a 3/8" end mill and circle pocket out to 11/16" then finish as above.
Started 2 days, 12 hours ago (2009-11-19 16:10:00)
by Geof
Not adding straight water is new to me, I do it frequently. But you do have to be careful, don't just pour a bucket of water over the machine table and then just leave it; that is a guaranteed way to get rust. Pour the water in the coolant tank with the pump running and circulate everything to thoroughly mix it. I had mentioned elsewhere that a good way to keep the coolant oxygenated is to take ...
Started 1 week ago (2009-11-14 13:39:00)
by jmelson
Originally Posted by easyrider123
Hello everybody... I am stuck. I am trying to buy a old(cheap) cnc mill for my garage so I can work at home, before I lose my job. I have 2 to choose from, but I have no idea which one would be better.. ...
Started 5 days, 9 hours ago (2009-11-16 18:57:00)
by will gilmore
this forum is a great resource. start reading
start thinking about what you need: work envelope, tool size (rpm), accuracy, speed, budget?
Started 5 days, 2 hours ago (2009-11-17 02:06:00)
by hoss2006
50mm is almost a 2 inch bore, mine is only 1.5.
50mm will give about 304 lbs of force @100 psi.
You would only need about a 3:1 ratio cam lever to activate the drawbar.
20mm is .787 worth of stroke, the drawbar needs to move less than .100.
You can use the stock drawbar with a triple stack of bellevilles ()()(), that'll give enough
deflection for the collet to open.
A 3 to 3.5 inch ...
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