[jalessi]

CFLBob,

See attached link for long drill bit:

1/8" EXTRA LONG STRAIGHT SHANK DRILL 6" OAL 4" FLUTE LENGTH HSS #1-072A-008 | eBay

Jeff...

[CFLBob]

Thanks.

Edit 1632 EST - found a more expensive but apparently better drill bit on MSC Direct. I'm trying to figure out how fixture the cross slide to stand vertically on the G0704's base, and use it as a drill press to drill that long hole. I have a drill press, also Grizzly, but it has terrible runout. The bit won't be here until Thursday anyway, so I have plenty of time to think about it.

[jalessi]

CFLBob,

An angle plate and clamps would be one way.

See attached link, it may stimulate some idea's:

angle block fixturing - Google Search

angle plate fixturing - Google Search

Jeff...

Thanks.

Edit 1632 EST - found a more expensive but apparently better drill bit on MSC Direct. I'm trying to figure out how fixture the cross slide to stand vertically on the G0704's base, and use it as a drill press to drill that long hole. I have a drill press, also Grizzly, but it has terrible runout. The bit won't be here until Thursday anyway, so I have plenty of time to think about it.

[CFLBob]

That occurred to me last night. I think I could clamp the angle plate to the base with a couple of C clamps and clamp the work to the plate with another couple of C clamps.

The small problem is that I don't have an angle plate. I have a couple of sets of 1-2-3 blocks, but I don't see how to set that up at the moment. I have an assortment of drill press vises, but they're all very low profile. I need to spend a while in the shop looking at what I have available.

I also need to think about whether I duplicate the system exactly or use it as a stepping off point for other ideas. How about running hoses to the three ballscrews, but then just dribbling a drop or two of oil onto the ways and doing a couple of rapids to distribute it? Less automatic, but also lots less to do.

[hoss2006]

I drilled my long hole by hand with it still on the mill, it's not that difficult.
Another option would be to just go in an inch or so on either side and feed the oil in from both sides.
Hoss

[CFLBob]

Did you use a smaller bit to drill a pilot hole to help guide it, or just do the 1/8" hole in one pass?

The G0704 with the table off seems to have enough height to do the hole, although I'd have to lower the headstock. Not enough range to do it in one operation.

I have a 9x20 lathe that seems like it would work. Again, no fixturing to hold the mill's cross slide to the lathe's cross slide. It has Tee slots, but I don't have Tee nuts and clamps that fit it. I've never had anything on it but a QCTP.

[hoss2006]

you are trying to over engineer this, i just used an electric hand drill and no pilot hole.
Hoss

[CFLBob]

you are trying to over engineer this, i just used an electric hand drill and no pilot hole.
Hoss

I tend to over complicate things when I'm doing something I've never done before. Trying to figure out everything that can go wrong.

My nightmare is probably breaking off the bit in the hole with no way to get it out. The second nightmare would be drawing out where to drill the hole from the top but the long hole wandered and the eighth inch hole from the top misses it. Now where do I drill?

I found a guy's blog who did a conversion based on your DVD and he put the hole in the back left corner. It looks like he used a standard jobber length drill bit, because it's near where the oil groove bend is.

CNC mill oiling system ? plumbing | design & make if it's OK to show.

He used brass tubing, silver soldered into a brass manifold and shows how he regulates everything.

[Fastest1]

CFL. Your hesitancy is justified. As you can see, Hoss is very skilled.
Err to the side of caution. Take your time and you will be fine


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[CFLBob]

Thanks.

One of the standby jokes between my wife and I is I'll say that I've been woodworking, cutting metal, using torches, reloading ammunition, and lots of other dangerous hobbies, for a good 40 years and I still have 10 full-length fingers and two fully functional eyes. I want to plan the steps and think of everything that can go wrong a few times before the machine moves.

Your signature line sums it up perfectly. I don't want to do it twice. If I spent four times as much time and effort to keep from doing it twice, well, I hope that time and effort goes down as I get better at doing things.

[hoss2006]

[QUOTE=CFLBob;1966172

I found a guy's blog who did a conversion based on your DVD and he put the hole in the back left corner. It looks like he used a standard jobber length drill bit, because it's near where the oil groove bend is.

[/QUOTE]

Yep just like I suggested earlier as an option, "Another option would be to just go in an inch or so on either side and feed the oil in from both sides."
You could do one side like he did and hope the oil gets to the other side via the groove.
Hoss

[lcvette]

Because in flipping the nut around for the Y axis I believe I may have a ball stuck somewhere it shouldn't be. The nut moves freely up and down the screw but in 2 places there is more tension when turning the nut than the rest of the screw. It wasn't like that before I flipped it. Not sure if that is an issue or not.

If you have not solved the issue, I noticed that on all of my double nuts, each of the pair's had different sized balls in them and if you mix the two half nut balls together and reassemble you may have a notchy feel or tight spots. I used a micrometer to separate the two sized balls into two groups then had to test them to see which nut they should be installed in. After that all was smooth again. Each of my nuts had a variety of ball sized that i was able to test in different nuts to see which fit best without the notchy feel. Was a good indicator of what oversized balls I could order for the ones i robbed. I was able to get smooth motion along the entire screw with backlash under .0002" on two of them and .0003" on the 3rd. I quit there as the sized balls I would have needed were very expensive and we're not available from the eBay seller in 100 ball packs. They would have needed to be sourced individually from the other ball source and unless you buy in large volume it was crazy high.

Hope that helps!

Chris

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[joemusso]

I Have a C41 Variable speed control and I cant seem to get 10VDC to the motor board. I Have an AT 1100 watt motor kit.

I'm running ESS C25S with C41 I cant get 10VDC out of it.

I have the jumpers on US version 2 and 3 on both

running Mach 3

let me know if you need any more info

Thank you
Joseph

[hoss2006]

Sorry haven't personally used any of those boards so can't help you there.
Hoss

[joemusso]

No problem Hoss maybe someone will come along and give an answer.

Thank you
Joseph

[DonKes]

Not everybody wants to jump in here and find someones problem to solve.

Don

[joemusso]

well isn't this place for that kind of thing helping each other out?

[DonKes]

Silly me, I thought the forum was for that.

[diyengineer]

I Have a C41 Variable speed control and I cant seem to get 10VDC to the motor board. I Have an AT 1100 watt motor kit.

I'm running ESS C25S with C41 I cant get 10VDC out of it.

I have the jumpers on US version 2 and 3 on both

running Mach 3

let me know if you need any more info

Thank you
Joseph

Email Arturo from cnc4pc.com

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[joemusso]

Thank you diyengineer