Preditor Laser
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A prop to emulate the Preditor laser aiming device as seen in the film
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Model information
- Source
- Printables
- Category
- Props
- License
- Creative Commons — Attribution
I was asked to make a Preditor Laser aiming device. Initially I thought this would be easy but there was complexity. I detail this in the SCAD library I created to hold these cheap 6mm red led modules. The details for that is here -> https://www.printables.com/model/1643003-cheap-6mm-laser-holder
With the laser module holder done I then could finish the project quite quickly by placing three mounts in a triangle and finishing off with a body to cover it all up and keep it showerproof. There is also a drainage weep hole and that should be the lowest point if this is mounted outside for any length of time.
At the back I used a 20mm electrical cable compression gland. In the UK they are easily available and I got mine at Screwfix (https://www.screwfix.com/p/vimark-nylon-male-comp-glands-20mm-black-2-pack/992pv). The gland did not close down sufficently onto the figure of 8 cable I was using, so I printed a small bush to take up the extra space in the gland. I printed mine out of TPU so it was a bit flexible to help with sealing. The bush has a split so you can put it over the cable.
I printed all parts (not the TPU bush) at 0.15mm layer height in black PTEG with no supports.
If you enable the customiser there are some options
When assembling you can assemble the laser mount by putting one ball in each socket followed by the pressure plate and retaining it all with the mount cap. The laser module can be pushed into the mount and aimed. When pointing in the right direction it can be locked by screwing the mount cap until tight.
This enabled me to achive the nice triangle of laser points over a long distance.
I've posed this as I made it. I made one for me and one for the person asked for it. This means it's not 100% proven and you may well get variatons. Also I included the laser holder library here to save an addidtional download.