Grinding GG Glass to precise size?

EASmithV

Member

Joined

Aug 22, 2008

Messages

1,984

Location

Virginia

Format

Large Format

• Jan 25, 2012

• #1

I bought a nice looking GG from China a while back. It has the markings for every roll film back format known to man, which is really nice. However, it was designed for a Wista / Toyo, so it needs about 1.5-2mm ground off either side to fit my Graflex.

Does anyone have on tips on grinding glass? I was going to use the disc side of a belt sander with the finest size sandpaper I could find and a spray bottle of water.

 

Photo Engineer

Subscriber

Joined

Apr 19, 2005

Messages

29,018

Location

Rochester, NY

Format

Multi Format

• Jan 25, 2012

• #2

For that much you may need to use a glass cutter or the professional services of a glazier. That is a lot to grind off IMHO.

PE

 

John Koehrer

Subscriber

Joined

Apr 3, 2004

Messages

8,277

Location

Aurora, Il

Format

Multi Format

• Jan 25, 2012

• #3

Or a 400 grit wet or dry sandpaper.
Use it wet, It will take a little while <hr but trying to cut 1-2mm with a glass cutter needs some experience. It's not scoring the glass, it's how the hell do you grab that 2mm edge to snap it off?

 

removed account4

Subscriber

Joined

Jun 21, 2003

Messages

29,832

Format

Hybrid

• Jan 25, 2012

• #4

(there was a url link here which no longer exists)

 

cowanw

Member

Joined

Aug 29, 2006

Messages

2,236

Location

Hamilton, On

Format

Large Format

• Jan 25, 2012

• #5

A belt sander will be fine, no water. The only difficulty is staying straight so hold it long ways against the middle of the sander. Do a 30 degree sand on one side, turn over and do a 30 degree sand on the other side and then a 90 degree sand between the two. Then test it and so on.