Frame sizing

Street · 8 Feb 2017 at 12:41

I'm trying to size some picture frames for some pictures I've got and I'm being an idiot when it comes to working out what I need as the framing company are telling me one thing, but my measurements are telling me another.

I have two existing frames and want the new frames to be as close as possible to these. The pictures are 280x430mm and my current frames have an external measurement of 412x562mm. I'm using a 30mm frame with a 5mm rebate. From my maths, I'd need a 45mm mount to make the new frames the same size as the old ones given the 5mm rebate in the frame and a 4mm overlap on the picture in all directions. The framing company are telling me I need 40mm? I've spoken to others and they've all come back with different sizes again!

30 + 45 + 272 + 45 + 30 = 422
30 + 45 + 422 + 45 + 30 = 572
Minus 10mm from the total sizes as the frame rebate covers 5mm of the mount in each direction = 412 x 562mm.

I'm not going mad am I?!

Street · 8 Feb 2017 at 13:27

That's what I thought, but he said no, 40mm was the total size of the mount.

Street · 8 Feb 2017 at 14:20

That's fine, I just want the same size border and frame around the entire picture, otherwise it would look odd with a different size mount at the top and bottom to keep it the same ratio.

Street · 8 Feb 2017 at 14:34

Yeh, there is a 5mm rebate on the frame which effectively hides 5mm of the mount so on a 45mm mount, only 40 would be visible.

Street · 8 Feb 2017 at 14:50

Ah sorry, yeh it'll be bevelled but the total mount size should still be 45mm. I think I'll just go with my measurements and hope for the best. It shouldn't be too far out and hopefully not noticeably different. If it is, I can probably sell my existing frames and buy two new ones to match now I know the measurements.