Well, machine is down. Again.

[aforww]

So machine is down until I get a new spindle mount. Broke a $30 Raptor endmill tonight. Spindle mount just won't get tight enough to prevent movement. Stupid thing keeps shifting causing me to lose plum. Granted, it was a full width cut at 2000mm ramping. But was only a 2.5 degree angle with a maximum step down of 1.5 mm... Machine is more than capable of it. Sigh....

And if anyone's interested, I was trying to mill touch off plates from 1/2" aluminum. Did get to use the coolant mist and it worked awesome.

[breslinmr]

That is a pain. 😳 Think I would be crying if I broke $30 drill dit. I just got a few cheap Chinese ones to keep me going when I get machine delivered.

[aforww]

Jul 24, 2017 1:14:23 GMT breslinmr said:

That is a pain. 😳 Think I would be crying if I broke $30 drill dit. I just got a few cheap Chinese ones to keep me going when I get machine delivered.

It hurts a little. But, these things happen when you're exploring new ground lol. I know it was the above mentioned issue because the chips we're exactly as they should be. So feeds and speed were right on. Oh well. New mount on the way.

[Derek the Admin]

I actually think you were running a bit too aggressive. on the step down. You might also want to try roughing passes so that it's clearing chips better.... it will be tough to clear chips on a full slot cut when you get down 1/2" with a 1/4" end mill. That's just down the road info though.

You are using the Makita RT0701 in a DW660 mount, right? Or am I remembering that wrong. The DW660 mount is very very tight for a RT0701 so I'm just trying to understand where it's loose.

[aforww]

Jul 24, 2017 1:30:00 GMT Derek the Admin said:

I actually think you were running a bit too aggressive. on the step down. You might also want to try roughing passes so that it's clearing chips better.... it will be tough to clear chips on a full slot cut when you get down 1/2" with a 1/4" end mill. That's just down the road info though.

You are using the Makita RT0701 in a DW660 mount, right? Or am I remembering that wrong. The DW660 mount is very very tight for a RT0701 so I'm just trying to understand where it's loose.

You know me, I lean towards aggressive lol. There was no chatter and inspecting the chips they were very cleanly cut and the surface finish was very good so all was well until the router moved.

The issue isn't the router to mount. It's mount to Z plate. This mount uses two screws and there's just enough play in the holes that you can rotate the mount on the z plate a couple mm. Give a few and I'll get a picture. Putting kiddo to bed.

[aforww]

Jul 24, 2017 1:30:00 GMT Derek the Admin said:

I actually think you were running a bit too aggressive. on the step down. You might also want to try roughing passes so that it's clearing chips better.... it will be tough to clear chips on a full slot cut when you get down 1/2" with a 1/4" end mill. That's just down the road info though.

You are using the Makita RT0701 in a DW660 mount, right? Or am I remembering that wrong. The DW660 mount is very very tight for a RT0701 so I'm just trying to understand where it's loose.

I made a score line where level is. As you can see, I can rotate it slightly about 1.5 mm either direction. And no matter what I do, I can't keep it tight enough.

[Derek the Admin]

The Z plate will have four holes on a spindle mount row: Two 6.5mm slots on the outsides and two 5.5mm (thereabout) circular holes towards the center. That mount should have corresponding holes at each point. I'd do a couple things things:

1) Put the hardware on the inside, circular holes, or put hardware in all four holes. The outermost slots are really for the 400w spindle mount anyway. You might want to try a 6mm washer under the mounting screw there so as to give it a little more surface area to press against.
2) Make sure the hardware isn't bottoming out in the holes of the router mount. The outermost holes are blind holes on that router mount and your mounting bolts/screws might be bottoming out in these holes just as you think you are getting it snugged up. The innermost holes are through holes, but it's possible the mounting screws you've used are bottoming against the router if you had that installed first.

I could be wrong, but I think one of the above will get your situation straightened out. You should be able to get a ton of clamping pressure of the Z plate against the router mount.... or at least more than would ever allow for the mount to rotate.

Keep me posted.

[aforww]

Jul 24, 2017 3:02:16 GMT Derek the Admin said:

The Z plate will have four holes on a spindle mount row: Two 6.5mm slots on the outsides and two 5.5mm (thereabout) circular holes towards the center. That mount should have corresponding holes at each point. I'd do a couple things things:

1) Put the hardware on the inside, circular holes, or put hardware in all four holes. The outermost slots are really for the 400w spindle mount anyway. You might want to try a 6mm washer under the mounting screw there so as to give it a little more surface area to press against.
2) Make sure the hardware isn't bottoming out in the holes of the router mount. The outermost holes are blind holes on that router mount and your mounting bolts/screws might be bottoming out in these holes just as you think you are getting it snugged up. The innermost holes are through holes, but it's possible the mounting screws you've used are bottoming against the router if you had that installed first.

I could be wrong, but I think one of the above will get your situation straightened out. You should be able to get a ton of clamping pressure of the Z plate against the router mount.... or at least more than would ever allow for the mount to rotate.

Keep me posted.

The mount I'm using has through holes. Screws (M5) go through the mount, through the plate, and are then secured by a nut on the back side of the plate. You can see in the pics, I even tapped the holes to provide some more holding force and still no go. I thought about using the holes on the outside and going from the back side into the mount as well but at this juncture, I'm just getting a different mount lol. I ordered the bigger mount that uses four mounting points (top and bottom) for the Dewalt 611 andI'll just shim it out for the Makita. That should give me more holding power. Also going to throw some star washers between the mount and the plate as well for extra reassurance. This probably wouldn't be an issue if I wasn't trying to take off 1-3mm of material in each pass. I guess I just like to complicate things.



All this may be for not as I'm considering offering up the machine for sale once it's solid and putting that toward the Carve King. I've got a bunch of designs that are just better suited for that machine. I just imagine what I can do to modify it! lol.

[aforww]

Now we are getting somewhere.

[Derek the Admin]

I feel like vibration is loosening them. We ship our mounts with split-lock washers to help prevent loosening. I think that is the direction you ought to go on that. Either way, glad you got it worked out.