Help!.. Black mount board.. shiny marks

[CanvasChris]

Just cut a double black mount on the 'Gold'. It was for a print 40" x 22" so was a bit unwieldily to say the least.... especially towards the last cut.

However, spinning it round when cutting I seem to have created some shiny marks... they are not indents just the bed of the Gold has rubbed it.

any idea how to get rid of them? or am I looking at cutting again?

tried a rubber but it just dulled the MB

Thanks in advance...

[JohnMcafee]

A wipe with damp cloth will sometimes work.

[CanvasChris]

Hi John

Thanks for the tip but sadly didn't work.

I did try 0000 wire wool.... and bingo worked a treat. Wiped after with a damp cloth to get rid of the residue.

A bit drastic but had to do something otherwise 2 more sheets!

[Roboframer]

I'll have to give that a go, I have A CMC but am quite handy at scuffing boards in many other ways! Why would it mean two new sheets if it failed though?

To prevent the problem in future, use a slip mat larger than the whole mount and turn slip mat and mount together, this is also a good idea for multi-apertures, prevents the fall outs moving/dangling about on the last cuts.

[CanvasChris]

I had already glued them together so thats why 2 sheets...

Like the idea of a 'full size' slip mat... will give that a go myself next time.

cheers Robo

[Roboframer]

You can surely pull apart two pieces of freshly-stuck-together boards with no damage to the reveal of the bottom one?

[CanvasChris]

I need to get some atg tape that's less sticky... The stuff I got sticks like sh*t.

Can you get repositional?

[Roboframer]

I use PVA, which is like, totally, more sticky than any ATG tape going, but I also use just a few dabs of ATG tape that doesn't stick like sh*t - PH7-70 12mm ATG tape - just to hold things while the PVA goes off, which won't be while I'm cutting the thing! That's now, with a CMC and previous with an Ultimat Gerld (Sorry, brerk into a Hull accent there)

But even if I need to take the two boards apart a year later, the adhesive is not close enough to the reveal to worry about anyhow, doesn't really matter if I wreck the surface paper past that.

With a 3" wide double mount all adhesive will be no closer than 2" to the reveal.

PVA is faaaaaar cheaper than any double-sided tape and works better too.

[Jonny2morsos]

I use PVA, which is like, totally, more sticky than any ATG tape going...

Why is it this reminds me of somethig my teenage daughter might say? maybe you are just like so coool.

[Roboframer]

With a 3" wide double mount all adhesive will be no closer than 2" to the reveal.

That doesn't read like how it was meant to!

There will be no adhesive within an inch of the reveal.