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Your question is not perfect clear but let me give my comments. Adopting steel tubes (tank steel?!) cut by several pieces and assembled by bolting has couple of reasons. First, pieces of steel tubes could be handled by hand. Second, combination of tubes could make future design updates enable by adding additional tubes and reinforcements as design demand. Actually as they are made at home (workshop) not in plant, one piece of bulk frame could not be made. This would be a basic reason actually. Reason of adopting stepper motor is that I didn't have enough technical knowledge for the servo motors in CNC machine at that time. But I am on preparing upgrade my machine with servo motors. Related information will be uploaded in order. Below, I copied portion of explanation comment of "Part#1, Frame build" already uploaded in RUclips. Please refer to it. Thank you~ 1. Design contents of the Frame 1) Overall dimension : 436 X 570 x 830 (W x L x H) ** Machine drive unit stroke : 400 / 220 / 262 (x / y / z axis) 2) Law material : Steel tube 100 x 100, thickness 2.0 3) End plates (Th.8.0) with tap nuts or Closing plates (Th.1.6) for both end of tubes 4) Nut plates (Th.5.0 or 8.0) inside of tube for fixing hang-on parts 2. "Bricklaying" ("Lego brick masonry") concept Each Frame assembly (Base, Column) has mainly 4 sets of frame. 2 Main frames each side and 2 Spacer frames in between them with 130mm long bolts for connection. * Total 64 bolts are used for entire Frame assembly. * Every frames are filled with Epoxy concrete (w/gravel and sand) inside. 1) Merits - Frames avoided heavy metal work (casting, milling etc.) in parts fabricating - Lower weight, so as to be handled by hand, without help of crane. * Highest weight of Column 9.6Kg in Frames - Easy future design change (upgrade, rebuild for enhancing the capacity) by adding frames and reinforcements as needed. 2) Risk - Difficulties of dimensional accuracy control of the assembly with this concept, several times accuracy check and adjusting had been done through the frame building to final assembling of driving parts (Linear block, ball screw etc.)

No. My machine was designed by manual as my CAD skill is not enough to cover the whole machine design. Animations in video are just the animation I drew!

Thanks~~

Sorry for the late response ! Appreciate your thankful comment but answering to your question was not easy(; Actually as I am not a professional, in order to get needed information I was using RUclips and Google. User manuals and electrical circuits for CNC controller in Google was userful in building my machine~

Gracias por por tu sinceridad, pero ese para mí es muy profesional talvez me puedas compartir los manuales de los circuitos eléctricos

Sorry for the late reply! Chain with Inside dimension 7x15 HxW and bending radius R15 was applied in-between the vertical gap 50mm of y-Base plate and x-axis unit brace plate . As only two wires (one is the x-axis motor shield wire Dia 5.2, the other is the limit switch wire D 4.0) are went through the chain, area capacity was no problem. But as the chain size was so small, it sometimes went off the route due it's small distortion~

Hello ~ First, appreciate your liking my project! But sorry I'v got no electric data to be shared - I have only manual drawings for my machine. By the way, I have tried to include whole the design contents and processes as far I can in my videos, so I believe you can get design concept enough so as you to make similar machine as mine from my videos. When you need some more detail information, please let me know. Thank you.

@@cncforall12 but you showed the assembly on the computer in the video.

They are not the electric design data but just the animation

Happy with your words of encouragement every time!

Woohoo! Thank you!

z-axis : stepper motor NEMA34 / 12Nm y-axis : NEMA34 / 8.5Nm x-axis : NEMA24 / 4.0Nm ** NEMA34 / 8.5Nm for all 3 axes would be the optimal solution in my machine I think. ** There was a little worrying about the small size of x motor as it was decided to be packaged in between x-base plate and work plate. It is running well now but feels a little low power, would have been better with 12Nm. ** Tell me which component you would like to know more?

OK I will~

I thought wrong that it is an appendix (just collection of videos for detail) so only video is enough, no sound is needed. But it seems awkward actually! Sorry for giving inconvenience~

Wonderful!(: Thank you

Thank you for your great comments~~

Thank you for great comment! Especially for the series~

Thank you~😀

Hello~ You can contact me through hvioih01@gmail.com

Video editing skill is getting better and easier(:. By the way, interesting! the concept of yours and mine are so similar (e.g. frames made from cutting square steel tubes etc.) even though we didn't have any talk before designing~ And the level of completion of yours is much higher than mine (Face milling, grinding the hang-on item mating area on frames). So, I suppose we can share further technical dialog some more. Thanks~

Appreciate your great comment for me!

Thank you! Hope it be helpful for you~

I'v learned SPM=Special purpose machine from you and then Google(:. Thank you. My machine is not very special but the frames which was uploaded in part#1 video would be something special I think. It has several part frames and they are combined mainly by bolts so that each parts could be handled by hand not by crane at home and the total assembly could be easy to be design updated by modifying the parts or adding extra parts. By the way, are you asking more upload part to part? Total 6 videos already uploaded and next ones to be. I'v been trying to include every part to parts as far as I can. You can refer to them. Thanks~

@@cncforall12 sir am very interested to you are machine building video great and you completed this session and in future you will build spm for me learning sir now am going to interview machine building and automation you are video very helpful full thank you 🙏

Please refer to another my answer for previous your comment

Thanks~😊

Join means subscript of my channel? Anyway sure! Thank you~

Hello friend, your technical contents are much better. I'v been learning from your video.

@@cncforall12 thank you I appreciate it. Yes it’s cool to work on same project in the same period, you will see the next video is better !

I forgot, was negligent that point when painting them. Should not be good for rigidity but also accuracy. Paint will be removed on the spindle mating surface. Thank you

Thank you! I'v been sharing all of my design as far as I can in my videos :)

Would appreciate your beautiful word!

Suppose you mean too much gravel and sand ratio compared to epoxy?! I had altered it at that time and with the ratio I selected I remember reasonable "viscosity" for filling and expected it to give better damping performance (esp. for low frequency) with that epoxy granite not only for providing stiffness of the frames. Will recheck it in next building with your thanks opinion.

@@cncforall12 mineral casting is not simple for building metalworking machines. measurements show different value at lifetime, it change geometry if used wrong proportion and had no heating process

매번 잘 봐주시어 고맙습니다^^

Appreciate your watching my video and give great words of encouragement!

@@cncforall12 My pleasure! Thanks.

Thanks a lot!

이것저것 할일이 많습니다^^

감사합니다 구독도 감사합니다

격려 코멘트 고맙습니다. 화학적 성분까지는 아니고요~ 기계적 강도, 진동특성을 높이기 위해 에폭시 화학 제재를 충진하는 것입니다.

열심히 최선을 다하는 모습, 보기 좋네요.십여 번 대화 나눈 것이 전부인데~~ 뭔 가 도전하는 것 같아 더욱 더~~ がんばれ✊‼️

격려 고맙습니다! 가끔의 대화도 일상의 즐거움입니다~ 친환경유기농TV도 화이팅입니다^^

Appreciate your kind input on this!

고맙습니다~ 이제 시작입니다! 다음 동영상은 1편 보완영상 2편이 곧 업로드될 것입니다

😃

재밋게 보세요~

Appreciate your support all!!!

Thanks for your encouraging!

Great for your great comment!

대단한 일을 해냈군요 축하합니다 다음 동영상을 기대합니다