Milling machine - video

[mwmkravchenko]

It's sand filled. I think compacted sand will be better for damping than concrete which can shrink. Sand always self adjust to walls of column.

A good choice.

[Frank S]

It's sand filled. I think compacted sand will be better for damping than concrete which can shrink. Sand always self adjust to walls of column.

I agree with using sand instead of concrete. The finer the grind the better

[mwmkravchenko]

I agree with using sand instead of concrete. The finer the grind the better

Yup you have mass and you have something that will vibrate and convert the machine vibrations into a tiny bit of heat. Although there is expanding grout. I still think that the sand is a smarter way to do it.

[Frank S]

I have had good success using sand that was almost powder and oil and 80/20 to 90/10 sand to oil for vibration dampening. in a 10 HP gantry drill it also seemed to add a lot of stiffness we drilled a 2" hole near the top of the columns then filled the columns and the gantry cross beam a few inches with sand added a bit of oil then rinsed and repeat until the columns were full. Made a huge difference in the performance of the machine and lowered the overall sound level significantly, virtually eliminated and chatter when drilling with 2" and larger drill bits.

[SteelCraft]

Video about column:

Now I will focus on dovetail guides and movement mechanisms.

[SteelCraft]

Update!

[SteelCraft]

Hello

Some newest photos. Ton of hand scraping done in those photos and still one of the guides (right one) is 0,2 mm wider on last 15 cm on the bottom. I found this defect after putting everything together, rest 70cm works perfectly. So more hand scraping is waiting...



Oh and I screw up a backplate of the knee. It turned out that Y axis would not be square to Z axis of the machine. It was like 2mm of difference on distance of 530 mm. I tried to grind the backplate but I made it worse. I mean It was square vertically but got twisted. I had to cut off this piece and make, a new one (you can see it on photos above).

[mwmkravchenko]

You are getting an education that few people will ever have. Not good you need to do work two times. But you certainly are learning a great amount about how to make better setup and better welding.

Mark

[SteelCraft]

Repairing knee is not that bad, it's like 2 extra hours of work. The worst is extra scraping. It will wait to christmas break. I'm back on university now.

[SteelCraft]

New video.

Basically it's covers everything that you can see in my previous post with photos about machine guides.