Epoxy granite

=== alternatives ===
see Lathe concrete for special type of cement as alternative to expensive epoxy.
=== tech ingredients ===
https://www.youtube.com/watch?v=6KjlyXKeo8c We show how the addition of a wide range of materials can improve the properties of epoxy adhesives. 
https://www.youtube.com/watch?v=3Pc-Sd_J26E fiber glass 
=== pipe ===
https://www.youtube.com/watch?v=Px07lIp01GY Mill track for linear guide out of large square steel pipe. haven't noticed any deformation. The tube is now stuffed with epoxy granite(wikipedia entry) and making an excellent lathe bed and absorb Vibration. I'd say you go for it. It's cheap as chips and works like a charm if you attach some hiwin style linear guides to it. 
Epoxy granite, also known as synthetic granite,[1] is a mixture of epoxy and granite commonly used as an alternative material for machine tool bases. Epoxy granite is used instead of cast iron and steel for better vibration damping, longer tool life, and lower assembly cost.) http://www.cnccookbook.com/CCMillEpoxyFill.htm (forked from http://www.cnczone.com/forums/epoxy-granite/30155-epoxy-granite-machine-bases-polymer-concrete-frame-47.html#post274123). See slant bed lathe cnczone.com 
When you consider that even a heavy "bench" mill like the IH still weighs just under 1,000 pounds, while a really small commercial CNC mill such as the Haas TM-1 weighs in at about 3,000 pounds, you can see we hobbyists are challenged to do whatever we can to increase machine rigidity! , Part one, bed risers lathe epoxy granite youtube , https://www.youtube.com/watch?v=-0Cn0WRXPKs. longest thread epoxy granite cnczone.com 
Haas lathe with square linear guides http://s24.photobucket.com/user/mahockett/media/haas11.jpg.html from http://bbs.homeshopmachinist.net/archive/index.php/t-21705.html. Guides are raised 10cm above base , creating a depression for chip deposits. See http://www.lathes.co.uk/scinta/index.html scinta model on lathes.co.uk. 
=== suppliers ===
http://www.westsystem.com/ss/105-epoxy-resin epoxy 105 resin 
https://www.jamestowndistributors.com/userportal/show_product.do?pid=3760 52 gallon drum $3000. 
LOCTITE EA 3478 KT SUPERIOR METAL 450 g Kt -Metal Filled Compounds 
=== ratios ===
https://www.youtube.com/watch?v=bhX5Sqxzpik 
https://www.youtube.com/watch?v=2woA1BxZ7Pg four part build 
https://www.youtube.com/watch?v=4aBVAbfxLJw epoxy mix ratios. See Epoxy granite 
https://www.youtube.com/watch?v=-0Cn0WRXPKs Epoxy Casting a CNC Milling Machine 
https://www.youtube.com/watch?v=EaxnEKCUREk and playlist 18uilding a casting mold for the bridge of the CNC machine with laminated boards; Threaded inserts for the linear guides, ballscrews, stepper mounting and the holes for the connection to the first part, the base. A granite board underneath provides the flatness. Inside edges are sealed with silicon and the inner faces are coated with separating wax. Volume ca: 75 liter All ready for the mineral cast with epoxy and rock and gravel… https://youtu.be/yglTpUNokUU 
=== @metalmusings ===
https://www.youtube.com/watch?v=ZJM7aQ3H338 Linear encoders on stepper motor CNC milling machine. Part 11 Epoxy granite from https://www.youtube.com/@metalmusings 
=== @robertsteinwandel6658 ===
https://www.youtube.com/watch?v=cEBbyuoDyR4 by https://www.youtube.com/@robertsteinwandel6658 This is my process for DIY Epoxy Granite for my DIY Metal Lathe. Let me know what you think, Im going to try to keep this description as a bit of a living document to add extra info on anything I may have missed in the video. With Google spreadsheet for calcs. 
https://www.youtube.com/watch?v=XoCeRApHrus Lots of progress to catch up on with the lathe. The linear rails are both in and the precision aspects are starting to take shape which is really exciting. The spindle is assembled with headstock bearings in place too. Over the next week Ill remove the secondary rail and finish scraping under it, and begin mounting the cross slide rails to the saddle as soon as they arrive. The epoxy granite still seems really solid and all evidence Ive seen seems to point to it working really well for a machine base in the long run 
=== @nickp4793 ===
https://www.youtube.com/watch?v=4nb3YoKybXY tramming with epoxy(jbweld), removing with wax and silicon. See Shimming 
https://www.youtube.com/watch?v=O4pbd7wdXyY 
https://www.youtube.com/watch?v=pMdgg5LQ1LU Ep 10: I changed the design completely. Switched to a 6" x 6" x .5" aluminum extrusion, still filled with epoxy granite. Discuss how much more work it is in the engineering phase of a project, compared to the concept phase. Showed many different frame brainstorms. Discussed several different ways to clamp the linear rails against a shoulder. Showed my thought process along the way.
*Re-upload with better editing to get rid of dead air*
I'm designing an epoxy granite CNC machine, benchtop sized. The focus on this series will be on the "why" of the CNC machine design. The CAD software I'm using is Onshape. I'm a mechanical engineer, but I don't have CNC design experience, so I'll be learning as I'm going.
https://www.youtube.com/watch?v=pMdgg5LQ1LU by https://www.youtube.com/@nickp4793
=== links ===
lathe spindle 
https://www.youtube.com/watch?v=ZlXCDfyW8X0 Granite Epoxy Base PM727MXL Premixed Epoxy Granite.
In this video I go through all the steps I used to fill the PM727M mill to stiffen the base and column from http://www.castinite.com by https://www.youtube.com/@CNC4XR7 
https://www.youtube.com/watch?v=SfNkTdpEMRA diy epoxy tombstone 
https://www.youtube.com/watch?v=NAbJsDwYXdY I'm finally getting to the epoxy granite fill of the IH/RF-45 clone bench top milling machine. I'm also doing the column and a full flood enclosure with a 5HP belt drive to run everything. Should move along rather fast now started. The mill is like the PM-940 with a 1000mm table but a shorter Y. 
Five_axis_mill#@a-cnc-f 
Five_axis_mill#@Svanitterzon 
https://www.youtube.com/watch?v=4aBVAbfxLJw&t=183s adam bender 
https://www.youtube.com/watch?v=cXDNbvY4pWc precision granite build 
Cnc_plans#epoxy_granite_build 
moglice links to turkite 
Lathe 
Lathe concrete 
Vibration 
Category:Machine design
Category:Epoxy granite
Category:Lathe