How to get rid of old dried glue

[yitz]

The glass on my knife display box broke, and when I tried replacing it I have been having trouble getting rid of the glue/silicone/crud that held it in place. This makes it impossible to insert the new glass correctly. Any ideas on how to soften or remove the old stuff? Thanks.

 

[frugalweaver]

Silicone-Be-Gone by DAP is a solvent designed specifically for silicone. It will dissolve cured silicone, and is also handy for clean up of freshly applied silicone. It is very thick so it is easy to place directly on the silicone with out drips or spills. It takes about 2 hours to completely dissolve the silicone, but it really does work. But be careful; even though it claims to have a "non offensive odour" don't be fooled. It is an oil based solvent and is therefore toxic. Use with proper ventilation.

 

[rev_jch]

Razor blade also works! (But you have to be careful)

 

[Sword and Shield]

I've stripped more caulking and glue with a single-edge razor blade than anything else. Works very well indeed.

 

[Bufford]

Yitz; Try warming up the old crud with a heat gun or gently with a propane torch. Just be real careful not to get it too hot or it will break under your breath. Use the heat n touch method. Warm the surface bit by bit and test it with your fingernail. Once the gunk is soft enough, use a razor blade or suitable scraper and gently scrape the crap away. Hope this helps.