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Granite Gantry Rail Drilling Part 6

Granite Gantry Rail Drilling Part 6

Posted by Jonathan Gee on Mar 02, 2022

THE END IS NEAR, AND SO I FACED, THE FINAL CORE DRILL!!

Drilling Granite for Mounting Rails
[Part 6]

Posted by Jonathan Gee, 1st March 2022


This is a privately funded project that frequently sees shortage of funds delaying progress, If you are enjoying this build diary and would like to contribute to the completion of this project and all the future guides and video journeys it would be gratefully received and spent directly on this project. Donate through PayPalMe Here...

Granite Hole Drilling Part 6

In the last episode of this series we will look at the drilling of the holes on the back face of the gantry. The will be used to form the complete assembly which we will look at later in this build blog.

Nothing special to report really, but it may give you some ideas for clamping in different situations so I thought it better to show, rather than leave out completely.

Nothing special to report really, but it may give you some ideas for clamping in different situations so I thought it better to show, rather than leave out completely.

Again I made a jig for marking out these holes but I must not have taken a picture of this. You can get the idea. Score the holes by a millimetre or two, and then complete the bore afterwards.

Again I made a jig for marking out these holes but I must not have taken a picture of this. You can get the idea. Score the holes by a millimetre or two, and then complete the bore afterwards.

Holes drilled in granite ready for inserts to be cemented in.
Image of stainless steel insert cememnted into hole cut in the granite.

Once again, I managed a nice clean finish to these inserts. It gets easier as you go along and find a technique that works for you. I suppose if you want to practice you could drill a hole in either spare granite or some wood, to test out the cure time and technique. If you cement in with the Fischer Resin/Mortar Hybrid mix that i used, if you are working at almost freezing temperatures, the curing time increases to almost 5 mins i believe. I believe that is you can stand for hours and hours in freezing temperatures pulling on the spindle of a pillar drill, you are rewarded with longer cure times.

 

Below I will just post a few photos of the gantry assembly with all the holes cut and rails attached. There are a few more holes to work on yet, but only a small number for things like ballscrew mounts and glass scale.

Front perspective photo of the front face of the gantry show the rails mounted.

Front perspective photo of the front face of the gantry show the rails mounted.

Side perspective photo of the front face of the gantry show the rails and carriages mounted.

Side perspective photo of the front face of the gantry show the rails and carriages mounted.

Another photo of the gantry with the 100+ holes drilled

Another photo of the gantry with the 100+ holes drilled

Yet another view of the gantry measuring in at a little over 1400mm.

Yet another view of the gantry measuring in at a little over 1400mm.

Photo frPhoto from above showing a lot of the top mounted inserts.om above showing a lot of the top mounted inserts.

Photo from above showing a lot of the top mounted inserts.

Please feel free to leave any questions, comments or feedback on this build diary blog.

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Originally Uploaded On: 02/03/2022

Last Updated On: 02/03/2022

Estimated Date Period: : 01/11/2020

This is a privately funded project that frequently sees shortage of funds delaying progress, If you are enjoying this build diary and would like to contribute to the completion of this project and all the future guides and video journeys it would be gratefully received and spent directly on this project. Donate through PayPalMe Here...

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THIS BUILD DIARY IS ONLY HOSTED ONLINE BY EMG PRECISION LTD. IT IS A PRIVATE HOBBY PROJECT BY MYSELF, JONATHAN GEE. THIS PROJECT BLOG IS ONLY A DIARY OF EVENTS WITH SOME IDEAS FOR HOW I FELT THE PROCESS WENT WITH SOME TECHNIQUES I FOUND USEFUL. THIS IS NOT AT ALL AN OFFICIAL GUIDE OF HOW TO DO THINGS AND YOU SHOULD SEEK PROFESSIONAL ADVICE FROM COMPETENT PERSONS AND CONDUCT RISK ASSESSMENTS BEFORE UNDERTAKING ANY OF THE TASKS SHOWN IN THIS PROJECT BLOG DIARY.