Feel the future in the possibilities of this material. 

I fully agree with your advice. I will try it in the next test.

Granite is an available material, but as you say it is only a simple shape. I hope your project goes well.

​@@a-cnc-f Thanks. I've been experimenting with different types of materials with the 3d models of parts and machines that i've made in Inventor. Granite and epoxy granite have great dumping properties and they're not deformable, but these properties are good only in case if your machine has to resist high cutting forces. If you need to cut high carbon steel at high feeds using high torque spindle then epoxy granite base is a great choice for a machine, but for small steel cutting machines, like lathes or mills - there is no practical difference between steel/iron and granite. You can dump all of the unwanted vibrations in a small machine by using good spindle bearings together with smooth working motors, hybrid steppers is a minimum, they work much smoother and provide less vibrations. Servo motors is the best choice to dumb unnecessary vibrations, but you have to understand well how to tune forward/reverse acceleration and deceleration for servo motors, cause they work really smooth until you want to instantly stop and reverse rotation at high speeds. Theoretically granite and epoxy granite is a great material, but practically it's not very useful for low cost and small size projects. I've made a router for the customer using granite surface plate as a base, it wasn't a cheap machine and I've used granite surface plate because I had to install IKO roller linear guides and C3 ballscrews provided by customer. Since then I'm not using granite and have no plans to use usual or epoxy granite at all, not only because of the properties, but also because I have a milling machine for steel and precise surface grinder - epoxy granite can't be used at magnetic plate of the surface grinder and practically it's better to weld any type of structure using square steel tubes and plates, get rid of the tensions in the furnace, mill, drill and grind this part the way you want it, reinforce it with rebar and THEN fill it with epoxy granite. Well if your plan is to make series of videos using epoxy granite as a material for the machine - I will only applause and will watch them. By the way the most complicated machine that I've built so far had 8 axis, it was 3d wire/rebar bending machine, it bends cut-to-length wire up to 8mm diameter. Well just 5 of these axis are motor driven, other 3 are pneumatic cylinders, the machine by itself has 4 motors + 2 cylinders, attached feeding device has 1 more motor+cylinder. There is another 2d bending machine that I've made standing near this 3d bender, it has 5 axis in total, well.. 4 axis + knife. It straightens and cuts wire for the 3d bending machine, but can also work as 2d bending machine. I really hope that in 2022 customer will order a second 3d bending machine and whole project will work as I designed it... Original design: two 3d bending machines stand near and there is a spot welding machine between them. Each bending machine should take piece of wire from the feeding side, then each one of them bends their piece, then bending arms holding parts meet under the electrodes of spot welding machine, and after welding is done - completed piece is released on top of the conveyor belt and moves to the box. I haven't filmed the machine when it was completed, but you can see the first steps of 3d bending machine in my videos. When this customer will ask me for a visit - I'll make a video of machine when it works.

You have great knowledge and experience. Since posting this video, I've received more comments from more people than I expected. I learned a lot from you. I would like to use it as a reference for the next test.

Someone told me about UHPC concrete. Which is better, epoxy granite or concrete, as a machine base?

@@a-cnc-f еще вы можете использовать для армирования ваших изделий стеклоткань или другие волокна

Thank you for a lot of advice. I will try it in the next test.

Thank you for your advice. I agree with your opinion. As you can see in the video, I tried to vibrate it using the vibration function of the iphone, but it didn't work very well. Certainly it needs reinforcement. Further testing is needed.

I would love to use a vacuum chamber, but if I put it in our small room, my wife would probably get angry.

You can use vibratory table or hand held vibrator like those used on concreate. Or you can get small DC motor and put counterweight on It, and seal it. It worked in my case

@@kwk8363 I agree with you. I'm thinking of making a vibrator with a small motor.

I've seen bolt threads embedded into the epoxy. You leave part of the thread out to attach parts. However, I do like the thread insert idea.

In this experiment, it was found that the just embedded nut can be Certainly, concrete is worried about cracking. removed by tightening the screw strongly. Regarding important screw holes, I felt the need to connect with the frame.

@@a-cnc-f About mounting stuff to the frame, keep in mind that you can just glue with construction adhesive to the epoxy 2 ground flat steel bars and drill and tap them wherever you want. The bond between the epoxy granite and the steel bars will be more than strong enough and you will have a flat surface easily.

www.lazada.sg/products/i602366804-s1952380349.html?urlFlag=true&mp=1 www.lazada.sg/products/i602366804-s1952380350.html?urlFlag=true&mp=1 www.lazada.sg/products/i1938517337-s10368571793.html?urlFlag=true&mp=1

@@a-cnc-f hey they are no longer available. Would you be able to provide an alternative link or how I should search for it online

Sounds interesting. It would be nice to reinforce with carbon where the epoxy granite would be thinner depending on the shape of the part.

はい。私は日本人です。 でも日本には住んでません。 あまり英語も上手くないです。 非常識なことが大好きです。

@@a-cnc-f 見れば見るほど使ってる道具が日本のものだったのでやはり日本人でしたか。 同じ中国製のミニ旋盤を所有していて色々参考にさせてもらっています。 制限のある環境で作り上げてるのは日本の住宅環境にとても合うと思います。 レベルが高過ぎてついていけな部分が多いですがこれからも動画を楽しみにしています。

I used rivet nuts because I thought their shape would be suitable for embedding in epoxy granite. However, as you can see from this test, the rivet nut is made on the assumption that it will be deformed, so it will be deformed if too much force is applied. It is better not to use it on the part where force is applied.

アドバイスありがとう。 出来れば、真空にする設備が欲しいですが、残念ながら予算も置く場所もないですね。

@@a-cnc-f Sorry to reply in English, my Nihongo is not very jouzu yet :))). What you can do is also pressurise the part to make the bubbles smaller.

Thank you for subscribe. I watched your channel. You are also making a CNC machine. Let's do our best to complete the ideal machine.

LINUXCNC

@@a-cnc-f Sir which software do you use for cam

@@sandeeps7979 fusion360

@@a-cnc-f Thanks again sir.

I think big things are usually preferred, but I'm thinking of making ultra-small things.