A specialized tool called the window zipper also is great for loosening painted joints.
Best putty knife for window glazing.
When the glass is fully in place insert the glass points on the outside of the glass.
Wet the knife again and run over the compound as many times as it takes to create a smooth surface.
I seem to prefer it over a regular putty knife that s straight and somewhat flexible.
Oil based putty is easier to work with when it s warm.
Use your putty knife for this.
The angle is helpful especially at awkward positions when you have to leave the sash installed.
They should not show above the outside of the glazing putty.
The bedding went on smoothly and the glazing was easily packed into the rabbet and cut smooth with a standard putty knife.
It is stiffer than your average knife it has almost no flex to it.
This is the most common glazing putty that professional window restorers use and it s what my shop uses about 90 of the time.
They will fix the glass while you apply glazing putty to the outside.
To complete the job smooth out the new glazing compound.
The traditional putty knife has a stiff blade but as young explained those are for removing window glazing as well as putting glazing in but you can do that with a flexible blade too.
Dip a putty knife in mineral spirits to lubricate it and smooth out the compound.
This so far has been great for applying and smoothing out window glazing putty.
One pass down the rabbet with the handle held parallel to the glass as opposed to holding the knife perpendicular to the glass yielded an impressively clean and smooth cut.
I use a combo of two 3 stiff putty knifes and a thin pry bar to wedge out stops beads and sash.
I rely on a very stiff 1 5 putty knife to tool putty and a soft thick paintbrush to dust off the glass with dry powder whiting.