[atomarc]

Jeff,

Thanks for the video. I have done that same procedure repeatedly, right out of the box and over again after the crash and it still isn't reading accurately. I can get the concentricity dead nuts and adjust the nul to exactly zero and the thing still reads bonkers. It's off to Germany!

Stuart

[atomarc]

Some photo "ketchup"....

[atomarc]

This was last Sundays project. Exercise in picking back up the geometry on the 2nd op, opposed to just hogging off the "hat" / remaining material.

[atomarc]

Off to the mother land! Looking forward to getting the "estimate" , the consensus seems they are "to costly to repair" but you will be hard pressed to find any true answers on the matter. Call it a surprise.....shall let you know in a few months! = )

[atomarc]

Today's lesson!

https://youtu.be/x-OEWOsX7OQ

[Turbo442]

I though we all agreed you were gonna put the Haimer away for a while. Carefully put it back in the box and slowly walk with it to the garage trophy shelf.

[atomarc]

Matt,

We melted all the trophies down to make money to send the busted Haimer back to Germany. The Haimer that we're currently using seems to measure accurately enough to pick up the part after flipping it so there are no noticeable machining lines...maybe its crash wasn't as severe as the other one was.

It's amazing how many chips a simple little part will generate. It's also interesting how a slight change in speeds and feeds can make the chips much less 'pluggy' for the drain screens. The chips in the firsts experiments were like fine hair and slowed the drains down considerably. After Nick got a bit more realistic in his speeds and chip loads, the coolant just sails through the screens.

Early on in this build Chris (Icvette) make a comment about building a chip conveyor into the enclosure during its construction. The general consensus was that might be overkill for a small hobby machine like this, but I will admit, it might have been a viable scheme after seeing how many chips even a small job generates.

Stuart

[mountaindew]

Matt,


It's amazing how many chips a simple little part will generate. It's also interesting how a slight change in speeds and feeds can make the chips much less 'pluggy' for the drain screens. The chips in the firsts experiments were like fine hair and slowed the drains down considerably. After Nick got a bit more realistic in his speeds and chip loads, the coolant just sails through the screens.

Early on in this build Chris (Icvette) make a comment about building a chip conveyor into the enclosure during its construction. The general consensus was that might be overkill for a small hobby machine like this, but I will admit, it might have been a viable scheme after seeing how many chips even a small job generates.

Stuart

Easy to make mess of chips machining parts 2x2 or larger! When performing the normal operation to mill off the top of part to height. I tend to setup back to front and left to right tool paths to send all the swarf to the easy side of my machine for clean up. Something to consider anyway.

[maxspongebob]

I just wanted to say, it is hard to believe that these are pictures of the same machine. Way to go.
You have done a fabulous job with the upgrade.

[atomarc]

Mr. Sponge,

What great pictures, thanks for the 'before & after'. It is hard to believe, but of course I have lived every nut, bolt and wire so my view is a bit skewed. Lots of water (and $$) under the bridge between those two photos.

I think the one feature I like most on the machine is the power draw bar. I cannot imagine swapping tool holders using a wrench.

Stuart

[gd.marsh]

Stuart,

I felt like the chip auger was a bit overkill too, but I did it anyway and am now glad I did ..
Being experienced machinists you may already know this, but It was a real game changer for me ..
If you're able to walk away from a messy machine after finishing a job .. the chip clean up is WAY EASIER the next day after it's dried out.

Gary

[Kenny Duval]

So awesome to see it dirty and making stuff.

[atomarc]

Gents,

Thanks for the positive comments and the suggestions. Currently, Nick is doing just as Gary suggested...mounding the chips on the sloped sides of the enclosure and letting them drip-dry overnight, then it's a pretty straightforward cleanup.

Stuart

[ballistic42]

Nick, the mill looks awesome and from the videos it is doing a great job! If you would not mind, how many lbs. of holding force are your belleville springs producing and how did you stack them? It looks like you are using TTS tool holders like myself. By the way, My Haimer Zero Master is not set right on the 0 mark either. The small needle is just barely off.

Jeff

[atomarc]

Jeff,

I'll answer for Nick if i may,

Thanks for the positive comments. If you look at our post #73 you will see the Bellevilles and how they are stacked. They give us a little over 4000 lbs of pull on the toolholder. This obviously required some type of drawbar that can compress that force to release the toolholder, hence our air-over-hydraulic intensifier and home made hydraulic cylinder.

With only 50 psi of air, the intensifier when can develop over 4700 pounds of squeeze on the drawbar to release the tool. If we mistakenly applied 100psi to the system we could get almost 10,000 pounds at the cylinder, which of course would be the end of the Grizz for sure..

On the Haimer, the little instruction sheet that came with our ZeroMaster shows the simple procedure to adjust the 'nul'..meaning the adjustment to align the indicator hand with dead zero at rest. Have you tried that, it's simple and done without digging into the instrument.

Stuart

[atomarc]

Big thank you to friend "CS900" !!!! Super awesome!! The care package of regrind end mills is amazing. Truly appreciated.

- Nick / Stuart

[CS900]

I want to see the long one in action on the grizz!

[atomarc]

I want to see the long one in action on the grizz!

Cliff,

Nick says he has a piece of Kryptonite all lined up to cut down with that 'long mother rougher'

Stuart

[CS900]

Cliff,

Nick says he has a piece of Kryptonite all lined up to cut down with that 'long mother rougher'

Stuart

I for one, look forward to that video!

[ballistic42]

Stuart, I got the Belleview springs figured out for the drawbar. I appreciate your help. I have a question for you. I had a drawbar turned on a lathe from a machine shop as I did not want to use all thread. I thought that the all thread draw bar was bent, well it was not. The TTS collet I was using was actually .023 out of round in other words the center of the hole was not concentric. We put the draw bar in the lathe chuck with the collet attached and it was pretty sad to see. Well that carries up to the belleviews and to the draw bar nut. I tired a different Collet from lindsy and even a bridgeport, same thing.

Out of all that rambling on, did you have a problem with yours of did you use some kind of centering taper like on a bridgeport to center the draw bar in the spindle?

Jeff