[hoss2006]

Hoss,
Thanks for the heads up on that. I was overdue for getting a good selection of endmills to have on hand for all the projects. Now I am well stocked, and my wallet isn't nearly as light as it would have been.

Regards,
Raymond

Good to hear, I signed up and get emails when stuff goes on sale,
tooling is 35% off from time to time.
That's when I stock up even if I don't need to.
Hoss

[mattbesquare]

*hides the wd40 can next to his new wmd16v*

*hides his cans behind fish's wmd16v* :wee:

[hoss2006]

covering all my cans with Mythbuster brand labels.

[ihavenofish]

covering all my cans with Mythbuster brand labels.

haha

im doing somethign to my little mill that might be of interest here since is a "non destructive" mod.

if you find yourself needing more Z clearance on the machine when you get a big vise and long r8 tool in there, you can take the Z saddle off fairly easily, and mount it upside down. the lead scre will still connect the same way, and the head can mount upside down (it swivels 360). this will get you 3-4" of extra clearance (not sure how big the saddle is on the grizzly).

then you can always put it back later if you need to get closer to the table.

[hoss2006]

Good idea though the gain on the grizzly would only be 1.5 inches, the pivot is much closer to center
than on the wm16.
I'll try it during the CNC conversion, the slot for the leadscrew nut mount will have to be widened a little
to make up for the head being a 1/2 inch off center.
Looks like the stock screw is long enough to make up for the 4 inch difference in leadscrew nut position,
could let it over travel a bit.
Hoss

[ihavenofish]

I'll try it during the CNC conversion, the slot for the leadscrew nut mount will have to be widened a little
to make up for the head being a 1/2 inch off center.

why would it need to be widened?

the way it is on mine, thered the leadscrew block, which hassome lateral movement abolity (few mm each way) and the lead nut is in a round socket that pivots freely. when you flip the saddle, the nut just swivels around and is in the same spot. it wouldnt change a lot when going cnc i dont think in terms of being centred.

im confoosed

[hoss2006]

Theres some extra movement of the nut mount possible, the slot looks like it could
allow 1/4, but flipping the head over would need about 1/2 to line back up with
the centerline of the leadscrew as it is now.
Hoss

[ihavenofish]

Theres some extra movement of the nut mount possible, the slot looks like it could
allow 1/4, but flipping the head over would need about 1/2 to line back up with
the centerline of the leadscrew as it is now.
Hoss

why is this? are the dovetails on the column not centred? on mine they are. the gib is cut out of the saddle.

if the dovetail isnt centred, you probably wouldnt get the best results flipping it over.

[hoss2006]

why is this? are the dovetails on the column not centred? on mine they are. the gib is cut out of the saddle.

if the dovetail isnt centred, you probably wouldnt get the best results flipping it over.

Nope not centered, a 1/2 off as I've been saying.
A pic is worth a thousand words.
Hoss

[ihavenofish]

Nope not centered, a 1/2 off as I've been saying.
A pic is worth a thousand words.
Hoss

ahhhhhh. ok.
well nevermind then. haha. wonder why they choose to do things that way on one machine, but not others.

on mine, the Y and Z are symetrical, the X table is off centred.

[machinechick]

The z axis "saddle" is symmetrical on both sides, that's why the dovetail on the z column is offset; then there's room for a decent sized gib to fill up that extra space, without weakening the "saddle". Also, in this fashion the gib in essence functions as an adjustable extension of the dovetail, one that moves with the "saddle", which after all is the whole idea. IMO the size, tapering, and fit of the gibs on the BF20's really make the machine a good performer for it's size class.

[hoss2006]

Made the pulleys for the belt drive and gave them a test fit, all looks good.
Now for the motor mount.
Should be 2000 low and 6250 rpm high.
Hoss

4th Axis Calibration with OTC

[nomedia="http://www.youtube.com/watch?v=a5hgHx7irqk"]YouTube- G0704 Belt Drive Pulleys[/nomedia]

[LongRat]

Damn Hoss that's some proper nice work on those pulleys. Nice going.

[hoss2006]

Thanks, I've had lots of practice.
A lot cheaper than buying them.
Hoss

[ihavenofish]

Thanks, I've had lots of practice.
A lot cheaper than buying them.
Hoss

they look great. how well do they match the tooth profile on the belt? what type of bit do you use?

[serriadh]

I know pulleys designed for flat belts have a slightly convex face so as to center the belt when its running at speed. Is it simply not necessary to the same trick with toothed belts? If not, it does make me wonder where all the money goes when you buy these things pre-made...

[HellPhish]

Made the pulleys for the belt drive and gave them a test fit, all looks good.
Now for the motor mount.
Should be 2000 low and 6250 rpm high.
Hoss

4th Axis Calibration with OTC

YouTube- G0704 Belt Drive Pulleys

im actually kind of surprised you didnt go for a laser calibration setup

[hoss2006]

im actually kind of surprised you didnt go for a laser calibration setup

I made that Optical Tool Setter almost 2 years ago,
about time I used it for Something.
Hoss

[Bob Adams]

im actually kind of surprised you didnt go for a laser calibration setup

Hey Hoss, you could use my Motor tuning steps program in the Timing pulley program to setup the A axis for Mach3 steps. Great Video loved it!
Bob A
http://www.cad2gcode.com/pulley

[hoss2006]

Can't believe I missed that all this time, thanks.
Hoss