How do you cut a glazing bar?

lozcozard · 5 Dec 2019

Might be a silly question, but cant find anything about this online.

Glazing bars come in set lengths which wont match my length. I will need to buy the next size up and cut it to length.

But how does one do this? I dont know what ones I will buy yet, I understand some are aluminium or some pvc. The glazing bar will be for timber and 16mm polycarbonate.

Thanks

Burnerman · 5 Dec 2019

An ordinary hacksaw will be fine for this, and using a padded jaw vice to prevent marking.
John

Notch7 · 5 Dec 2019

They can be cut with a chop saw with a TCT blade, Ive cut many hundreds that way.

If you dont have a chop saw, use a hacksaw, jigsaw, recip saw.

Wear goggles if using powered tools -and aluminium can snatch so i would recommend screwing down to a base board or use clamps.

lozcozard · 5 Dec 2019

"chop saw" do you mean mitre? I have a mitre, dont know about tct blade but will look into that and if its just a matter of getting the right blade then thats brilliant as I have one. thanks

Notch7 · 5 Dec 2019

lozcozard said:
"chop saw" do you mean mitre? I have a mitre, dont know about tnt blade but will look into that and if its just a matter of getting the right blade then thats brilliant as I have one. thanks

Yes a mitre saw.

All blades on a wood mitre saw are TCT -ideally you want a fine tooth negative rake blade. If you are buying a blade to do the job, buy a budget as aly bluntens quite fast -and extruded glazing bars are hard alloy.

Please be aware, cutting aluminium can snatch, clamp, wear gloves and eye protection.

Cut slowly and I recommend turning off saw when aly is cut and retract blade when its stopped turning.

lozcozard · 5 Dec 2019

thanks a lot for that advice

Mw Roofline · 8 Dec 2019

I remember when I cut an Ali reinforced glazing bar with a grinder and the wheel snatched and went through my jeans and into my leg. A long time ago when it was quicker to use the grinder rather than a cutting bench, clamp and the correct saw.

Leofric · 8 Dec 2019

If it is just one bar use a hacksaw.

mattylad · 8 Dec 2019

Hacksaw will be cheaper than a new blade.

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How do you cut a glazing bar?

Leofric

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