Originally Posted by abs
Are there any concerns about any fibres leaking out from the panels into the air. Thinking for my projector mainly. Another thing I've asked a couple of guys on you tube who have shown their build videos, when importing your image into gimp and then resizing why can't I create a size for the panel in looking at making, eg 1200 x 600 mm? When I input these dimensions the software changes these measurements. So basically do you base your frame build on the measurements given out on the software?
Minimal concerns about the fibers (or fibres
) with the panels if using rigid acoustical insulation. The main place that they could go into the room from would be the back, so it is recommended just to cover the pack of the panel with some sort of cheap fabric. Really anything will do. Then all fibers will be contained within the frame and front/back fabric.
As for GIMP changing your numbers, do you mean that you change one and the other changes too? genaccmiller is spot on if that is the case. You have to un-link the X and Y axis.
Be aware though that depending on the starting image dimensions, this could really distort the final image. Take a 300 mm x 200 mm image, enlarge the 200 to 600, and you end up with a 900 x 600 image that looks right, but isn't what you want. If you manually unlink the X and Y numbers, you are effectively stretching that by 300 more mm in the one direction.
Your other option would be to make it 1200 mm as desired, and then take the other dimension and crop it down to 600 mm. You throw away a lot of the image, but maybe it isn't critical.
Or, you keep something at 900 x 600 (as an example) and then add a movie title or something in the other 300 x 200 part of empty space to fill it to 1200 mm. That is what I've recommended a few times and was just done and pictures posted here by someone else just recently.