Shop Floor Talk  

Go Back   Shop Floor Talk > Welding and Metalworking Forums > Fabrication

SFT Search:   
Reply
 
Thread Tools Display Modes
  #1  
Old 09-14-2010, 05:19 PM
panhandle_redneck's Avatar
panhandle_redneck panhandle_redneck is offline
Senior Member
 
Join Date: Dec 2006
Location: panhandle of TEXAS
Posts: 528
Default How to cut a hole in glass?

How would you cut a 3 inch hole in glass? Square or roundmakes no difference.

More specifically in the bottom of wine bottles.

I need the bottoms open or completely off.

What would be the easiest way? What would be the cheapest way?

I have most tools available that yall have but I will probably have to buy something bit or cutter wise.

So how would you do it?
__________________
I hear and I forget.
I see and I remember.
I do and I understand. --Confucius
Reply With Quote
  #2  
Old 09-14-2010, 05:28 PM
flametamer's Avatar
flametamer flametamer is offline
Elite Member
 
Join Date: Jan 2005
Location: Benton, Mississippi
Posts: 1,330
Send a message via Yahoo to flametamer
Default

The easiest way would be to cut the bottom off instead of putting a hole in the bottom. Would that work? I get nervous thinking about drilling through glass.


Dt
__________________
Sero Sed Serio
Reply With Quote
  #3  
Old 09-14-2010, 05:32 PM
panhandle_redneck's Avatar
panhandle_redneck panhandle_redneck is offline
Senior Member
 
Join Date: Dec 2006
Location: panhandle of TEXAS
Posts: 528
Default

Ok. How?

Scratch and pop (??) it off?

Bandsaw?

Grinder?
__________________
I hear and I forget.
I see and I remember.
I do and I understand. --Confucius
Reply With Quote
  #4  
Old 09-14-2010, 05:40 PM
OleDog's Avatar
OleDog OleDog is offline
Senior Member
 
Join Date: Jan 2009
Location: SW Kansas
Posts: 853
Send a message via Yahoo to OleDog
Default

I have used my bead blasting cabinet to put holes in plate glass. I just took a rubber washer and held it over the glass and blasted away until the beads wore their way thru the plate. It worked, but wasnt particularly precise. I only was trying to see if I could do it, so a 1/2 in hole is as big as I've ever cut. You might be able to adapt it to your project.

OleDog
__________________
If you loan someone $20 and never see that person again, it was probably worth it. -- Jack Handey:evil:

Do not compute the totality of your poultry population until all the manifestations of incubation have been entirely completed.

Nothing says "Poor Workmanship" like wrinkles in your duct tape!!
Reply With Quote
  #5  
Old 09-14-2010, 05:55 PM
brucew's Avatar
brucew brucew is offline
Sorcerer's Apprentice
 
Join Date: Jan 2009
Location: Haskell, Texas
Posts: 1,310
Default

Back during the 70's there was a bottle cutting craze. I bought a "kit" and made steins, vases and a bunch of other items. I thought I was cool.

The kit consisted only of a glass cutter and a "rapper". You would cut a line on the outside of the bottle all the way around. The Rapper was then inserted into the bottle and tapped slowly and lightly around the scored line. You could see the line breaking as you tapped if you watched closely enough.

Usually after it was tapped all the way around the bottom would just fall off, but it seems like I remember sometimes having to place the tapped bottle in hot water, then quickly quenched in cold water. That would usually finish the cut.
Reply With Quote
  #6  
Old 09-14-2010, 06:02 PM
panhandle_redneck's Avatar
panhandle_redneck panhandle_redneck is offline
Senior Member
 
Join Date: Dec 2006
Location: panhandle of TEXAS
Posts: 528
Default

This was thought about.

Score the outside and insert a dowl pin and stand itup on the dowl. Apply down pressure on the bottle onthe pin and rap and tap the outside of the bottle.

Sound like it would work?
__________________
I hear and I forget.
I see and I remember.
I do and I understand. --Confucius
Reply With Quote
  #7  
Old 09-14-2010, 06:04 PM
Andyman Andyman is offline
Member
 
Join Date: Nov 2009
Location: Florida
Posts: 231
Default

happen to have watch this done on a TV show a few months back and found it for you to watch. you'll either have to watch it all or skip through till you find the part where they cut the glasses.

but if I remember right, the guy scribes a line in the bottle
then heats up with a torch
then dunks it in water
then the bottom breaks off with a nice clean cut.

here is a link of the episode of garage mahal:
http://www.hulu.com/watch/161246/gar...al-wine-garage

Andy
Reply With Quote
  #8  
Old 09-14-2010, 06:20 PM
panhandle_redneck's Avatar
panhandle_redneck panhandle_redneck is offline
Senior Member
 
Join Date: Dec 2006
Location: panhandle of TEXAS
Posts: 528
Default

Thanks for the link Andy. I will watch it tomorrow where I have high speed.
__________________
I hear and I forget.
I see and I remember.
I do and I understand. --Confucius
Reply With Quote
  #9  
Old 09-14-2010, 06:33 PM
Whitetrash's Avatar
Whitetrash Whitetrash is offline
Elite Member
 
Join Date: Mar 2009
Location: Estes Park, CO [Around 8000 Ft. Elv.]
Posts: 2,890
Default

Those videos from EMAS that were posted awhile back show how to do it in the solar panel build.


It shows the process starting at 1:20 into the video
__________________
"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery."
Winston Churchill

Last edited by Whitetrash; 09-14-2010 at 07:47 PM. Reason: More Info
Reply With Quote
  #10  
Old 09-14-2010, 06:39 PM
downtime downtime is offline
Member
 
Join Date: Aug 2008
Location: H-Town Texas
Posts: 86
Default

Rotozip has a bit for glass blocks.
__________________
"An honest man can feel no pleasure in the exercise of power over his fellow citizens." Thomas Jefferson
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Web Search:

All times are GMT -5. The time now is 03:47 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.