OldTools Archive

Recent Bios FAQ

249476 Michael Suwczinsky <nicknaylo@g...> 2014‑07‑25 Scarey Sharp question.
This week my glazier buddy got me a piece of heavy glass.  So last night

GIT Kenny and I made a few practice runs with some plane blades and some

chisels.


My

thoughts were to permanently mount the glass to some OSB.  This would allow

for maximum flexibility and mobility.  Do ya'll agree?  If so what adhesive

to use?
My chunk of plate glass for scary sharp has a length of that drawer
liner/anti slip/rubbery mesh stuff you get at the hardware store to keep
rugs from sliding on wooden floors.
Same 3M spray adhesive that holds the sandpaper on the glass on one side
holds the rubbery mesh on the other, albeit with a much thicker coat.  The
mesh holds the glass securely on my workbench, right up near the edge. I
generally run from about 200 grit wet/dry paper up to I think 1200 or 1500.
Water in a spray bottle as the lubricant, rag to wipe off the blades
between grits. The plate of glass (about 8inches by 24 inches) gets tucked
between two studs in the shop wall when not in use.

When I first set this up, I was concerned the flex of the rubber mesh would
mess with being able to get a flat, stable surface for sharpening, it does
compress some with pressure, but in years of use the flex and compression
seem to have no effect on sharpening.

Michael
249577 paul womack <pwomack@p...> 2014‑07‑28 Re: Scarey Sharp question.
Michael Suwczinsky wrote:
> When I first set this up, I was concerned the flex of the rubber mesh would
> mess with being able to get a flat, stable surface for sharpening, it does
> compress some with pressure, but in years of use the flex and compression
> seem to have no effect on sharpening.

It is possible that your system is actually better - the rubber
provides distributed support for the glass, so the glass is
"as flat as the glass", as opposed to being "as flat as the support".

A similar idea was used in the 30's for surface plates - the glass
was supported by carpet.

A rigid support will (most likely) only support
the glass at a few points, generating forces
likely to distort the glass.

  BugBear
249613 Mark Lovett Wells <mark@m...> 2014‑07‑31 Re: Scarey Sharp question.
On Fri, Jul 25, 2014 at 1:10 PM, Michael Suwczinsky 
wrote:

> My thoughts were to permanently mount the glass to some OSB.  This would
> allow
> for maximum flexibility and mobility.  Do ya'll agree?  If so what adhesive
> to use?
>

Whenever I have an adhesive question, I use thistothat.com.

Brent Beach glues his glass to something (tempered hardboard?  MDF?).    I
have a firewall issue that keeps me from getting to his site, but I know he
used to have a page where he described the glue he uses.

I don't attach the glass to anything (too lazy).  I have not have any
problems.  I made a little container that is pictured on this page:
http://www.mwells.org/woodworking/sharpening/step-by-step/scary-sharp-
supplies">http://www.mwells.org/woodworking/sharpening/step-by-step/scary-sharp-
supplies
The glass goes on top for use.  There is a lip on 3 sides that keeps the
glass from sliding.  The fourth side is open to allow flattening of backs.

I like having a separate grit on each piece of glass.

Mark
249616 Don Schwartz <dks@t...> 2014‑07‑31 Re: Scarey Sharp question.
On 7/30/2014 7:12 PM, Mark Lovett Wells wrote:
> Brent Beach glues his glass to something (tempered hardboard?  MDF?).    I
> have a firewall issue that keeps me from getting to his site, but I know he
> used to have a page where he described the glue he uses.

I think I'm using what he recommends - 1/4in hardboard glued with a 3M 
aerosol adhesive. Haven't had it long, but it seems good so far.

Don

Recent Bios FAQ