DIY CNC Epoxy Granite Part 1 of 2

[@MassoCNCAustralia]

Firstly thank you for such a great video, I have watched this over and over again and showed to my staff also. The machines looks great and I wish I could also make something like this. As other comments on the workshop, I totally agree and its like being in a dreamland with all the toys to build everything. Thank yo so much for sharing your knowledge and I hope I can one day build a machine like this and run my controller on it.

[@elliotdiego4282]

instaBlaster...

[@ShopperPlug]

What is the accuracy like? How did you align the linear rails and bolted them, what is the specific methods and process of it? 1:18 - What was the purpose of obtaining to cast iron? Was it because you needed specific dimensions which wasn't easily available for you from online or off the shelves from stores?

[@Kungs.]

Instead of milling the ways as at 3:28 if you don't have access to a large milling machine you could buy precision ground cast iron ( or mill/grind the cast iron pieces on their own on a smaller mill) set them up accurately on a surface plate with the mold and secure the mold so it doesn't move during casting. Depending on how big your casting will be and how thick your surface plate is will determine how you support the surface plate.

[@RoboArc]

Doing this soon. I don't have a machine big enough, so I'm using a mold with surfaced plates

[@ClockMakerDK]

The white substance is a layer of silicone. It gives distance up to the epoxy after curing. Once the epoxy is cured we will shape and removes the silicone. The cast iron is now exposed about 5 mm of the cured epoxy. We use an ordinary cheap car wax called SONAX Hard WAX.

[@arnljotseem8794]

Thank you for two very interesting build videos. I have watched both videos several times to learn and collect ideas. One question i have after seeing this first video, is why you put so much cast iron into the casting. It seems that both ways are resting on cast iron that goes more or less through the entire casting. One of the biggest benefits of epoxy granite, besides being lighter than iron and easier to cast, is its ability to dampen vibration; 10 times better that cast iron. When the ways of your mill is anchored to the large iron mass, does in not reintroduce the much poorer dampening abilities of iron? I have seen that you are under way on a new design, maybe this is one of the things you fix? Hope to see a future video of the new build. Thanks for taking the time to shed light on a very interesting subject.

[@CarlitoBeibe]

How are the linear slides clamped and alligned? I mean, the first one is simply bolted on the cast iron part with screw fastened onto the tapped iron? And if it is correct, the second linear slide how is it alligned? I'm seeing that you punch the second linear slide gently and checking with the dial indicator, however I didint understood'how this second rail is fastened onto the cast iron still being able to adjusted, and how is it permanently clamped down after the tramming procedure is completed.

[@flavour404]

Hi, look like great machines. What did you coat your moulds with to make them release the bases? I noticed that you encased the inserts in a whitish substance that you later removed with the mould to make them stand proud, what was it? Would you mind discussing your aggregate mix? Interested to see part 2. Thanks, Ron

[@timbermg]

What an inspirational build. How are you joining and aligning the gantry beam to the uprights, epoxy? Part2 cannot come to soon.

[@KK10155]

Hi any chance of doing a tutorial on making the epoxy and what material to use exactly etc? as well as the method for pouring into the mold and whatnot? thanks so much

[@sravandvs]

Which type of cutting tool material is suitable for cutting epoxy granite?

[@kpp4463]

Great build! How is the X Axis mounted on the two columns standing next to base ? Glue or is there a backing plate at the back of the machine ?

[@aaronpbrooks]

This shop is fantastic!

[@operator8014]

I was thinking about something like this but using cement instead and making it BIG. What are the advantages of this epoxy?

[@ClockMakerDK]

The motors. Leadshine Nema 23 hybrid step motorers with encoder. The Cast iron are 3 mm over the epoxy after grinding.

[@katawatenshu]

what a nice little machine base, would vibrating the molds helped with the roughness of some of the surfaces?

[@JohanRoosberg]

Fan vad fint Jörgen.

[@ClockMakerDK]

Cast iron as it has good characteristics. It is "dead" and better to temperature changes might occur. It has a good combination of strenght and wear resistance with excellent surface finishes. The most importent, Noise and vibration damping.

[@chirots]

Can I use river sand for this type of project? I am from North of Thailand near Burmese border. Only river sand can be purchased around here.

[@tungoctruyen92]

which size of granite did you use to cast ? thank you

[@ClockMakerDK]

Granite stones and powder coming from different hardware stores and aquarium stores. Size 5mm to powder. The epoxy-HP-Te Epoxy system in Germany with hardener HP E30000GL in the ratio of 100: 30 by weight. Great base for CNC.

[@veloclubustrem1039]

Hi, the rate epoxy to hardener is 100:30 by weight, but what is the ratio to the granite and that mixture?

[@MoeProxy]

Hi Jørgen, for the granite stones you used, did you have any specific ratios you used for the "Size 5mm to powder"? Or would random be sufficient? ( Great video btw. Very inspiring! )

[@MoeProxy]

Like 50% granite stones at 5mm, 20% at 3mm, and the rest powdered

[@mrtechnophile3483]

Amazing video, I love it! Wondering about at 6:00 where the second rail is being aligned to the first. Does one simply choose one of the rails as the 'straight' reference, or use marking dye and a straight-edge to attempt to straighten it, or are there many options? Thank you for the video!

[@ClockMakerDK]

The first beam clamped to the edge. The second parallel rail is aligned by means of a dial gauge mounted on two blocks of the first rail.

[@flavour404]

Hi, the inserts, are they sealed with wax?

[@5handry]

Great work, brilliant machine!

[@flavour404]

Hi, your cast iron inserts, how proud of the top of the cast are they? Thanks.

[@ClockMakerDK]

About 4 mm

[@GregSterg_]

Nice project, waiting for part two...

[@ristebozhinov9588]

Hi, how about using quartz sand mixed with epoxy resin?

[@MattOGormanSmith]

You want a combination of different size particles, to get the best ratio of stone to epoxy you can get, for stiffness and cost

[@MattOGormanSmith]

A great info resource www.cnczone.com/forums/epoxy-granite/

[@cabrauzimm]

when will you guys upload the second part of the build? Nice work!

[@ristebozhinov9588]

Hi, can i use granite dust(waste from cutting cranite) which is also mixed with marble dust ?

[@ClockMakerDK]

+Riste Bozhinov Try it. Make a small cast sample. Create a load test.

[@ristebozhinov9588]

+Jørgen Hegner how to know if the test is ok

[@ClockMakerDK]

+Riste Bozhinov If it can be twisted or bent, it is useless. It should replace the real solid granite. So this is the property you have to look towards.

[@ristebozhinov9588]

How u connect the gantry and the base of the machine?

[@ClockMakerDK]

+Riste Bozhinov With Epoxy, thats all.

[@Panzax1]

Great work ! What is the music at the start of the video ? Papa Bue ?

[@ClockMakerDK]

Thank you. It's a band from Sweden as i remember.

[@Zebra66]

The old "diy" CNC build for people who already have a CNC machine.... and a full machine shop.... very useful.

[@TheWartarn]

I m amazed ! Nice job

[@Tekperu]

EXCELLENT, PART II,PLEASE.

[@rcsaz3039]

HOW MUCH DOES IT WEAGHT?

[@SuperYellowsubmarin]

Your wife just called, she wants her cooking apron back :)

[@wilkoslavakia]

at 6:00 arrrrr so thats how you get the ways parallel. Always wondered how to do that thank you

[@joansparky4439]

Not to forget, that the flat were the first rail did go on has a straight reference milled in already.

[@nielsenminibio]

Hej Jørgen. Kan du fortælle lidt om hvilken epoxy, hvor meget, og hvilken "beton" du bruger. Jeg er interesseret i at bygge noget i stil med din, men mangler viden omkring epoxy/beton delen.

[@ClockMakerDK]

Du skal bruge en meget langsom hærdende epoxy for at undgå varme. Jeg købte epoxy i tyskland, men jeg tror firmaet er lukket. Der findes mange nye leverandører idag.

[@kollytools]

@@ClockMakerDK E51 epoxy resin?

[@ljuberzy]

why cast iron? why not jist steel square?

[@maynardr6]

cast iron dampens vibration far more than steel, so it cuts down on chatter, tool wear, etc.

[@andysen1987]

Hi! Such a sweet machine! Can you tell me which motors (stepper/servos) with how much power did you used for this machine? thanks! :)

[@doktorsaab]

Hi Jorgen. Great stuff, thanks for sharing the video. Could you please share more info, specs, etc. of the machine seen at 5:08 minutes in the video? Looks very interesting. :)

[@ClockMakerDK]

The machine you see 5:08 was built to produce large items without special accuracy. It is composed of aluminum profiles. The CNC milling else you see in the whole video is incredible accurate and stable if you compare with aluminum profiles.

[@harviecz]

Why you don't use polyester granite? It would be cheaper.

[@POPULARCULTURALHISTORY]

Hi Mr Jorgen ı want make CNC BED can you help me about making

[@TWFactory]

Nice work!

[@ClockMakerDK]

From granite powder grain size to a diameter of 4-5 mm.

[@nlr5914]

Hold da fast hvor i landet har i adgang til sådanne fine maskiner til at hjælpe jer med at lave sådan en lækker CNC konstruktion, det er jo misundelses værdigt :D Godt arbejde!

[@BrianFyhnPetersen]

Det ser godt ud. Prøv at vibrere formene så der ikke dannes luftlommer i epoxyaggregatet.

[@christianskovengaard9909]

Hej Jørgen. Har du et skriv på hele processen? Altså nogle tegninger eller nedskrevet mål? mvh

[@ClockMakerDK]

Jeg Har selvfølgelig tegninger med mål, men mange mål er ændret under fremstillingen og er endnu ikke rettet. Jeg er igang med et nyt projekt med nye tegninger.

[@christianskovengaard9909]

Jeg vil være vældig interesseret i at se noget mere info på opbygningen af maskinen, hvis man skulle gå i din retning. Hvor bor du i landet? Vil det være muligt at se maskinen i virkeligheden?

[@ClockMakerDK]

Den ene maskine er solgt og den anden er i københavn. Send mig en mail hvordan jeg kontakter dig til [e-mail]

[@kentvandervelden]

Fantastic!

[@pally15]

btw: waiting for the PART 2 ! .-)

[@factoryrec]

You have a every night dream workshop

[@AdamBender]

Wow, what a beautiful machine. The absolute passion in your work is awesome to see. Thanks for sharing! I recently posted a video on my channel where I go over an epoxy granite machine base I also made, check it out!

[@nitroglicirin]

workin area 2x2 cm ))

[@andersmeiniche2746]

to mænd der kan noget med håndværk hvor er det smukt ;O)

[@skjoldhjvrkstedsforening4930]

fedt arbejde Jørgen (y) :D

[@konighansen9062]

Det ser sq godt, det skal I have !

[@IceTurf]

Neat.

[@deuce454]

venter på del 2 !... er selv ved at støbe en fræser så erfaringer og video er en stor hjælp

[@muratcanbarut64]

SUPER

[@manudehanoi]

not quite diy but nice

[@goldendrop1000]

why is this popular?

[@ЕвгенийИвахник]

just because two cool grandpas

[@fastlanehobbies7580]

Bryan Kim results are the best CNC machine you will ever experience. E.G. Is amazing and the high end manufactures apply it within their castings.

[@cetubuth7461]

get rid of that garbage control board and use a better one