Drilling stopped hole in glass - Woodworking Talk - Woodworkers Forum
 2Likes
  • 1 Post By epicfail48
  • 1 Post By Quickstep
 
Thread Tools Display Modes
post #1 of 5 Old 12-28-2019, 04:57 PM Thread Starter
Senior Member
 
Join Date: Apr 2012
Posts: 2,896
View Quickstep's Photo Album My Photos
Drilling stopped hole in glass

I’m looking to drill a 1” diameter hole about 3/8” deep into a 1” thick piece of glass. I have glass bits that are like hole saws which will drill all the way through, leaving a plug, but I want a stopped hole with a flat bottom, like a Forster bit makes.

Any ideas?
Quickstep is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 12-28-2019, 06:41 PM
Wood machinist
 
difalkner's Avatar
 
Join Date: Nov 2011
Location: NW Louisiana
Posts: 4,305
View difalkner's Photo Album My Photos
I'm thinking the only way to do that would be with abrasives and grind it out. But I have no idea what bits or tools are available. Lots of water and a drill press or milling machine would be required, I would think.

David

David

Curly Wood Shop on Etsy
David Falkner - Woodworking YouTube channel and Instagram
Our music at church - current videos Airline Baptist BC Facebook Live
Romans 3:23
difalkner is online now  
post #3 of 5 Old 12-28-2019, 06:53 PM
Village Idiot
 
epicfail48's Avatar
 
Join Date: Mar 2014
Location: Springfield MO
Posts: 4,906
View epicfail48's Photo Album My Photos
David has it, you're looking at a grinding operation for something like that. Off the top of my head, without knowing if a specialised tool exists I'd say a plug of something like cast iron the size you want the hole to be, chucked up in a drill press and charged with a diamond abrasive, run at slow speeds, preferably submerged to keep things cool. Should be done by August. 2021.

Same general process that the really specialized home shop guys use to put holes in carbide. Slow as hell, messy, and probably not cheap unless you already have all the bits and pieces you need.

Why do you need that hole in glass? Any way the design could work with something different?
difalkner likes this.

I need cheaper hobby
etsy.com/shop/projectepicfail
epicfail48 is online now  
Sponsored Links
Advertisement
 
post #4 of 5 Old 12-28-2019, 10:00 PM Thread Starter
Senior Member
 
Join Date: Apr 2012
Posts: 2,896
View Quickstep's Photo Album My Photos
The carbide hole saw type glass bits go through glass like butter. I was really amazed. I was considering using a series of different sizes, but hoping there was a better way.
Quickstep is offline  
post #5 of 5 Old 12-28-2019, 10:05 PM Thread Starter
Senior Member
 
Join Date: Apr 2012
Posts: 2,896
View Quickstep's Photo Album My Photos
Oops, I said they were carbide drills, they’re actually diamond.
difalkner likes this.
Quickstep is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Woodworking Talk - Woodworkers Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome