UA-cam suggested this video on it's home page........... Their algorithms know me so well......... Possibly TOO well. 🤔 Anyway. I watched and promptly subscribed. Very much looking forward to the next video in this build.
I plan to start a project similar to this (more small), and I am currently collecting information. Could you say which composition you used to make the structure? ("concrete...?")
The mounting surfaces of the linear guides need to be flat and co-planer to ensure the precision and accuracy of the machine. On each of the X,Y, and Z axis you cast the mounting surfaces for the linear guides downward - that is to say that the mass of the concrete was bearing down on these surfaces while it was hardening. Did this cause any distortion in the steel inserts?...how did you prevent this from occuring? Or perhaps you are having these surfaces machined after the casting is complete?
Last one is right ;) After it was casted it´s machined. But it wasn´t so precise like I expected. So I leveled it after the machining with DWH Epoxy and a granit straight.
@@n3pu Hey thanks for the reply. I am working on my own mill using epoxy granite or UHPC as you did. One more question for you...what kind of material did you use for the inserts for the linear guides? Was is something simple like regular carbon steel, aluminum, or something special? I was wondering if you need to worry about stress relieving the material so when you machine it or scrape it that it doesn’t distort. I’d love to know how the mill is working for you, was it a success?
Schönes Projekt, Daumen hoch dafür. Baue auch gerade die schalung für eine uhpc Fräsmaschine und hätte da Mal ne Frage dazu. Hast du Probleme mit aufquillen der Spanplatten gehabt oder hast du die offenen Schnittkanten vor dem Guss versiegelt?
Moin. Hab die Kanten mit Silikon versiegelt bzw. Baudichtstoff, den hatte ich noch. Erst Charge hatte ich mit Acryl - das war aber nix. Baudichtstoff geht gut. Habs aufgespachtelt. Dass es wirklich not tut würd ich nicht sagen, aber die 4 Euro für Nummer sicher würd ich investieren 🙂 viel Erfolg schon mal. Denk bei den innenschLungen auf jeden Fall dran, dass man das wieder losbekommen muss 😉
@@n3pu I'm also building big machine out of UHPC and cant decide what grade steel to use for inserts as some are saying that it can warp after steel is machined milled or grinded from internal stresses. Hot rolled, cold rolled, drawn ... But as steel inserts are imbedded in concrete that is probably not to worry about. Do you have any build Log anywhere?
@@lukahrastnik important is to don't use some cold drawn steel... Use hot rolled ones. You will have have much lower wrap effect. I just use some cold drawn plates for the bearing and motor mountings. Because it was wrong delivered. I decide to don't reorder it and did a stress relief annealing. But only with the cold steel.. It's still a risk but it's just a small plate. Finally I got my first milled parts. Base and tower is now here. If I would do it again I would just rough milling and after I would use a metal epoxy mix to form the inlets for the linear guides with a granite straight or similar as master. I'm not happy with the accuracy of my milling. Some faults seems to be from the maschine geometry and some because of the fixing. First I tried to scrap it in a right way - now I'm going to epoxy. This seems to be an easy and very accurate way (it going to 1/100 mm)
It's a 2 component coating to resist the coolant later. With 1 component coating you will have a bad resistance. But the concrete itself should be able to withstand water and coolant I read In a test report of uhpc. I used the Durcrete e45. E80 was to different in thermal characteristics compared to steal (my inlets)...
Thanks for that! Does the coating have a name? I had a look at that concrete, it's interesting. I'm currently planning a mill with a steel frame embedded in concrete. Right now I'm looking for a light weight concrete (1400kg/m3), but I could probably remove the steel frame and do your method with that material and come out the same weight... I'll have to do some analysis
Very nice! Did you speak with Durcrete for the curing time of the concrete? 1 month is definitely not enough if you did not heat treated it for 48h after the initial 24h curing. Something like 12 months are required for good enough stability...
Thanks for your comment. I didn't talked with them directly. Just with the mixing service which only does the Durcrete concrete for machines.. Because of some delays I have now about 4 months. But maybe I will call tomorrow Durcrete to verify the statement of 1 month of the mixing service. Thank you
Mixing service is well said when you pick up a handful of concrete from the market leader in Uhpc machine beds. I had to laugh a little, thanks for that! You could also call the company by name, after all, they also concreted for you and helped you remove the formwork. But back to the topic, 1 month is enough for dimensional stability, tempering is unnecessary in this case and not a common practice. Best regards
First I wanted to do the concrete mixing on my own. Regarding costs, time and the risk that you maybe fail the specification of the E45 conctrete I gave the molds to a "mixing service". At the end it was cheaper compared to buying single materials and I´m shure everything is correct.
@@iamthebiker durcrete.de/machine-beds-with-nanodur/?lang=en. I think E45 is just the company's designation for one of their two UHPC formulations: durcrete Nanodur E45 and durcrete Nanodur E80, the main difference is E45 is 45,000 N/mm^2 and E80 is 80,000 N/mm^2 elastic module; www.bft-international.com/en/artikel/bft_New_Nanodur_concrete_with_high_modulus_of_elasticity_2526288.html. Also thermal properties are quite different. The key component you need for mixing up some UHPC at home that is not just sand/rock/water/superplasticizer is durcrete's magic "Nanodur Compound 5941". You can get it in Germany, www.moertelshop.com/NANODUR-Zement-guenstig-kaufen. No idea where you can get it elsewhere.
Sehr schönes Projekt. Ich habe dich sofort abonniert. Ich war auch schon von der Elke begeistert. Hier gefallen mir die Verfahrwege und der Maßstab noch besser. Ich hätte großes Interesse an dem CAD, falls du es teilen willst. Ich habe selbst schon eine CNC gebaut. Die sieht aber eher aus wie deine SCM7070. ua-cam.com/video/qQoS2Hb-IBc/v-deo.html
I'm not shure if I understand your comment correctly. Do you think during drilling and tapping in the drill press the holes are going through the material? The holes are blind treads. I also like my table and tools.
Definitely the best mineral casting I've seen on UA-cam. The design has been well though out. Well Done.
Great work, i'm cross fingers for this project, cheers from your neighbour from poland.
UA-cam suggested this video on it's home page........... Their algorithms know me so well......... Possibly TOO well. 🤔
Anyway. I watched and promptly subscribed. Very much looking forward to the next video in this build.
Yeah you're right. It's a crazy world where data analysis takes more and more attention.
Wow, great job on the design. And great job documenting the process and sharing the pictures.
I plan to start a project similar to this (more small), and I am currently collecting information. Could you say which composition you used to make the structure? ("concrete...?")
Good jobs!
Bonjour super travail belle machine pensez vous vendre les fichiers CAD merci
Nice project, thanks for sharing
The mounting surfaces of the linear guides need to be flat and co-planer to ensure the precision and accuracy of the machine.
On each of the X,Y, and Z axis you cast the mounting surfaces for the linear guides downward - that is to say that the mass of the concrete was bearing down on these surfaces while it was hardening. Did this cause any distortion in the steel inserts?...how did you prevent this from occuring? Or perhaps you are having these surfaces machined after the casting is complete?
Last one is right ;) After it was casted it´s machined. But it wasn´t so precise like I expected. So I leveled it after the machining with DWH Epoxy and a granit straight.
@@n3pu Hey thanks for the reply. I am working on my own mill using epoxy granite or UHPC as you did. One more question for you...what kind of material did you use for the inserts for the linear guides? Was is something simple like regular carbon steel, aluminum, or something special? I was wondering if you need to worry about stress relieving the material so when you machine it or scrape it that it doesn’t distort. I’d love to know how the mill is working for you, was it a success?
I'm impressed :)
Good job. Love that video :)
Schönes Projekt, Daumen hoch dafür.
Baue auch gerade die schalung für eine uhpc Fräsmaschine und hätte da Mal ne Frage dazu.
Hast du Probleme mit aufquillen der Spanplatten gehabt oder hast du die offenen Schnittkanten vor dem Guss versiegelt?
Moin. Hab die Kanten mit Silikon versiegelt bzw. Baudichtstoff, den hatte ich noch. Erst Charge hatte ich mit Acryl - das war aber nix. Baudichtstoff geht gut. Habs aufgespachtelt. Dass es wirklich not tut würd ich nicht sagen, aber die 4 Euro für Nummer sicher würd ich investieren 🙂 viel Erfolg schon mal. Denk bei den innenschLungen auf jeden Fall dran, dass man das wieder losbekommen muss 😉
What grade steel did you use as inserts for linear rails ? This will be beast at the end
Most of the steel is simple S355J. Nothing special...
@@n3pu I'm also building big machine out of UHPC and cant decide what grade steel to use for inserts as some are saying that it can warp after steel is machined milled or grinded from internal stresses. Hot rolled, cold rolled, drawn ... But as steel inserts are imbedded in concrete that is probably not to worry about. Do you have any build Log anywhere?
@@lukahrastnik important is to don't use some cold drawn steel... Use hot rolled ones. You will have have much lower wrap effect. I just use some cold drawn plates for the bearing and motor mountings. Because it was wrong delivered. I decide to don't reorder it and did a stress relief annealing. But only with the cold steel.. It's still a risk but it's just a small plate.
Finally I got my first milled parts. Base and tower is now here. If I would do it again I would just rough milling and after I would use a metal epoxy mix to form the inlets for the linear guides with a granite straight or similar as master.
I'm not happy with the accuracy of my milling. Some faults seems to be from the maschine geometry and some because of the fixing. First I tried to scrap it in a right way - now I'm going to epoxy. This seems to be an easy and very accurate way (it going to 1/100 mm)
What kind of mold release did you use?
@@grandmastersreaction1267
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Isolbau Schalöl 1l
@@n3pu you’re an absolute legend. Thank you!
Nice build! Just a bit bigger then my machine :D
I also watched your´s - it looks well engineered!
Muy buen trabajo
Can you share the cad of your design
Looks like my diy machine))
What did you use to paint/coat your concrete at the end? What type of concrete did you use?
It's a 2 component coating to resist the coolant later. With 1 component coating you will have a bad resistance. But the concrete itself should be able to withstand water and coolant I read In a test report of uhpc. I used the Durcrete e45. E80 was to different in thermal characteristics compared to steal (my inlets)...
Thanks for that! Does the coating have a name?
I had a look at that concrete, it's interesting. I'm currently planning a mill with a steel frame embedded in concrete. Right now I'm looking for a light weight concrete (1400kg/m3), but I could probably remove the steel frame and do your method with that material and come out the same weight... I'll have to do some analysis
Very nice!
Did you speak with Durcrete for the curing time of the concrete? 1 month is definitely not enough if you did not heat treated it for 48h after the initial 24h curing. Something like 12 months are required for good enough stability...
Thanks for your comment. I didn't talked with them directly. Just with the mixing service which only does the Durcrete concrete for machines.. Because of some delays I have now about 4 months. But maybe I will call tomorrow Durcrete to verify the statement of 1 month of the mixing service. Thank you
Mixing service is well said when you pick up a handful of concrete from the market leader in Uhpc machine beds. I had to laugh a little, thanks for that! You could also call the company by name, after all, they also concreted for you and helped you remove the formwork.
But back to the topic, 1 month is enough for dimensional stability, tempering is unnecessary in this case and not a common practice. Best regards
Awesome project, where did you buy UHPC?
First I wanted to do the concrete mixing on my own. Regarding costs, time and the risk that you maybe fail the specification of the E45 conctrete I gave the molds to a "mixing service". At the end it was cheaper compared to buying single materials and I´m shure everything is correct.
@@n3pu thanks 👌
I'm new to UHPC / E45 do you have any good links or information on that? What did you have to tell the concrete mixing service to give you? Thanks
@@iamthebiker durcrete.de/machine-beds-with-nanodur/?lang=en. I think E45 is just the company's designation for one of their two UHPC formulations: durcrete Nanodur
E45 and durcrete Nanodur
E80, the main difference is E45 is 45,000 N/mm^2 and E80 is 80,000 N/mm^2 elastic module; www.bft-international.com/en/artikel/bft_New_Nanodur_concrete_with_high_modulus_of_elasticity_2526288.html. Also thermal properties are quite different. The key component you need for mixing up some UHPC at home that is not just sand/rock/water/superplasticizer is durcrete's magic "Nanodur Compound
5941". You can get it in Germany, www.moertelshop.com/NANODUR-Zement-guenstig-kaufen. No idea where you can get it elsewhere.
@@n3pu Where can I find contact to that UHPC mixing service company, and what was pricing?
Sehr schönes Projekt. Ich habe dich sofort abonniert. Ich war auch schon von der Elke begeistert. Hier gefallen mir die Verfahrwege und der Maßstab noch besser. Ich hätte großes Interesse an dem CAD, falls du es teilen willst. Ich habe selbst schon eine CNC gebaut. Die sieht aber eher aus wie deine SCM7070. ua-cam.com/video/qQoS2Hb-IBc/v-deo.html
Sorry, but I don't trust in anyone doing this to his drill press. Drilling and tapping into the table showing big disrespect for his tools
I'm not shure if I understand your comment correctly. Do you think during drilling and tapping in the drill press the holes are going through the material? The holes are blind treads. I also like my table and tools.