Search found 48 matches
- Thu Feb 25, 2010 3:59 pm
- Forum: Home Shop CNC & 3D Printing
- Topic: One Power Supply or Three?
- Replies: 18
- Views: 6779
You don't necessarily need three power supplies but, if you use a single, it must be able to deliver full power to all three simultaneously unless you plan to make sure none of your programs ever try to drive all three at once. However, you have a lot more choices when shopping for small transformer...
- Wed Feb 10, 2010 4:34 pm
- Forum: Lathes
- Topic: Possible low cost DRO for 9x20 lathe
- Replies: 6
- Views: 3970
That DRO appears to just measure the rotation of the dials for it's distance measurement so you would still have to account for backlash in any measurements and it's measurement is still dependent on the accuracy of the lead screws. It is basically just a digital replacement for the dials. It does r...
- Sun Feb 07, 2010 6:29 pm
- Forum: 3-in-1 Metalworking Machines
- Topic: New member and need to drill some big-ish holes
- Replies: 14
- Views: 10519
The spade bits designed for wood working have a brad point which does a good job of staying on center and are only sharpened at the front, so they have a lot less tendency to wander than standard twist drills. They have a lot less surface in contact with the plastic so they don't heat the plastic up...
- Fri Feb 05, 2010 6:55 pm
- Forum: 3-in-1 Metalworking Machines
- Topic: New member and need to drill some big-ish holes
- Replies: 14
- Views: 10519
- Tue Jan 12, 2010 9:23 am
- Forum: Lathes
- Topic: I need a toolpost!! Can't stand this anymore!!
- Replies: 21
- Views: 7441
You say you really can't afford one. Have you considered making one? I have photos of my construction at http://home.earthlink.net/~jsutz/ (in the Projects section). I can send you my drawings in PDF format if you're interested. You would probably need to adjust the size a bit. You do need some meth...
- Wed Dec 23, 2009 10:23 pm
- Forum: General Discussion
- Topic: Thread forming taps
- Replies: 4
- Views: 2963
There is no need to back the tap up periodically. You definitely need a lubricant, but not a cutting oil. I've found that way lube works quite well. So does 75W-90 synthetic hypoid gear lube. I imagine most any heavy oil designed for high pressure applications will work. I've also had success with a...
- Mon Dec 07, 2009 3:20 pm
- Forum: Home Shop CNC & 3D Printing
- Topic: How to build an Indexer?
- Replies: 5
- Views: 5658
- Thu Nov 19, 2009 9:36 am
- Forum: General Discussion
- Topic: OT: Coffee Maker Boilers
- Replies: 17
- Views: 4874
- Mon Nov 09, 2009 3:37 pm
- Forum: Request For Services
- Topic: Small Turning Job
- Replies: 14
- Views: 13720
- Mon Jul 20, 2009 9:19 am
- Forum: General Discussion
- Topic: Protective coating aluminum.
- Replies: 0
- Views: 1099
Protective coating aluminum.
I've been searching but haven't found anything yet. Does anyone here have any experience with the Sanchem conversion coatings for aluminum? I plan to paint my parts with an epoxy primer and urethane top coat but I'm curious if Sanchem products work as well as the chromate conversion coatings (Alodin...
- Wed Jun 10, 2009 10:43 pm
- Forum: General Discussion
- Topic: Motorized Geneva Drive
- Replies: 13
- Views: 3995
A company called Mattson makes some semiconductor manufacturing equipment which makes use of Geneva drives in the material handling system. A four lobe is used for rotating the handling robot between each of the four stations (two process chambers, one cool-down chamber and the airlock for getting m...
- Wed Feb 25, 2009 5:41 pm
- Forum: Home Shop CNC & 3D Printing
- Topic: Stepper Driver Circuit
- Replies: 1
- Views: 2196