Scanning Glass

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exforma23
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Scanning Glass

Post by exforma23 » Sat Feb 10, 2018 3:40 pm

Hello,
I'm using a Trimble TX5 to scan an area of glass. Approx. 30 lin. ft. so it's not a whole lot. I'm sure this question has been answered already but I just can find it. I'm scanning a curved "curtain" of glass. And I only need the profile along a given elevation (a horizontal line about 3' off the ground). I tested some 3dscanspray.com with some sub-optimal results. At this point, I'm planning on using a 4" wide roll of blue painter's tape applied along a horizontal line to get a good scanning surface.
Does anyone have any advice, tricks, etc. for capturing glass surfaces?

Thanks

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LPaulCook
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Re: Scanning Glass

Post by LPaulCook » Mon Feb 12, 2018 6:33 am

I've read here that a mixture of alcohol and baby pounder sprayed on and let dry works.
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Formula1982
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Re: Scanning Glass

Post by Formula1982 » Mon Feb 12, 2018 9:06 am

2 options I've used in the past:

1. Mix alcohol and talcum powder in a spray bottle. The alcohol dries very quickly to leave a fine even coating of powder, which most laser scanners get a good return on.
2. A roll of masking tape.

The masking tape is normally the quickest, cheapest and easiest solution. The spray talc is better for covering larger areas. The masking tape better for picking up defined features.
From the description of what you're trying to achieve, i'd go with the masking tape.

dcacioppo
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Re: Scanning Glass

Post by dcacioppo » Mon Feb 12, 2018 3:11 pm

I have used the baby powder mixed with 91% rubbing alcohol, a little goes a long way. Just don't overspray it. It looks clear at first until the alcohol dries up and then you can see the white powder left behind. You can also try dry shampoo spray as well or fake snow in a spray can. I have also cut brown craft paper and taped it up on the window as well.

exforma23
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Re: Scanning Glass

Post by exforma23 » Tue Feb 13, 2018 1:22 pm

Thanks Everyone!
I'll go ahead w/ the tape for today.
I'll definitely do some experimenting with the talc spray.
It's a whole lot cheaper than the 3dscanspray at $30/can.
Hopefully, it'll work better.

:)

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3DForensics
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Re: Scanning Glass

Post by 3DForensics » Tue Feb 13, 2018 2:03 pm

Even better...buy dry shampoo. The girls on my team introduced me to this and it works like a charm and smells great too! you might need a few cans but it's easy enough to find and relatively cheap.

exforma23
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Re: Scanning Glass

Post by exforma23 » Tue Feb 13, 2018 2:45 pm

I have never heard of "dry shampoo". But. I'll look for it.
It sound as though cleanup would be a bit dicey. Is it soapy sudsy?

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