Hologram Pi-ramid - Plexiglass Pyramid

Very accurate and nice building. Two important things I have appreciated and never known. The first is the way you joined the transparent parts, I have always used Cyanoacrilate but with your solution it seems more efficient and precise. The second is the way of masking you have adopted to cut the transparent sheet. Incenious and efficient!

Enrico

Very accurate and nice building. Two important things I have appreciated and never known. The first is the way you joined the transparent parts, I have always used Cyanoacrilate but with your solution it seems more efficient and precise. The second is the way of masking you have adopted to cut the transparent sheet. Incenious and efficient!

Enrico

Also that blade looks safer than a normal knife..

I used to try cutting plastic with a normal knife, and here the nearby stores sold steel rules that would slip on the plastic, resulting in the blade to bend and snap, and lose a bit of flesh : )

Hello Enrico,

This is the first time I've heard of the Cyanocrilate. If you ever try the Dichloromethane method, the edges that will be welded should be "rough", ironically laser-cut parts are hard to glue at-first with this product because the edges cut are smooth and not 90 degrees; this won't allow the product to penetrate and melt the material easily -learned this the hard way with one of my failed projects . For laser-cut parts it's better to sand edges that will be welded...

When I learned a little about making stuff with Plastics, parts were cut with a Router which will leave all the edges rough and perfect 90 degrees (unlike the laser cut) perfect for DCM welding, leaving nice and strong bonds.

Luis

https://www.amazon.com/Starbond-Instant-PREMIUM-Cyanoacrylate-Adhesive/dp/B00C32MENO/ref=sr_1_2?crid=11V3S4500B4DK&keywo…

There are tons of types, with different viscosity and specific characteristics. I learned to use this kind of glues when working with anthropologists and archaeologists. You can essentially glue any kind of organic or chemical organic material together with almost any other thing (glass with metal, metal with metal, etc. And plexiglass or acrylic is great. After gluing you break it. But the concept probably is the same in the case of meta polymerization of organic cyclic plastics.

Enrico

Hi Shabaz,

It is not seen in the blog's pictures but I always secure the steel ruler with clamps -usually quick-grip- to avoid the slipping problem.

As far as I know, to cut laminates a regular cutting tool (knife, art-knife, etc) is not a good tool for the job, it will break, will not leave a clean cut, harder to use -it requires more passes- and will likely scratch at unwanted places. When I learned to cut laminates, I made my Scorer -poor man's version- with an old hacksaw blade and a bench grinder leaving a hook shape and later adding a handle (lots of tape, wood, etc) -like in the drawing below:

Now, I use the OLFA Laminate Scorer seen in the blog post

Luis

Nice tip Enrico!. I'll keep it later use.

Luis