Tell us about yourself!
Gluing and Fastening PVC
Tools and Materials for PVC
Cutting and Making Holes
Cleaning and Finishing PVC
I agree with Quiff, at least two of the images show you are using 200 mm/s. What is the wattage of the laser you are using?
what battery would you recommend for this project?
Tools and Materials for Laser Cutting
Laser Cutting Class
Transforming your world with Tinkercad
LEDs and Lighting Class
Or fill it with ketchup/(red food coloring liquid) for those in film/video for a cheap fake-blood packet.
On second thought, you've got a great idea slydersnyder, you could easily fill different bubbles with different colors and it would be a good way to do a rough sight-in of an air rifle on up. It would be easier to see from a distance or using binoculars to see where the shot hit the target.