MDF tends to bend and warp over a longer span and acrylic is too heavy. Both these materials are just not right to form panesl of the container and I cannot 3d Print such a huge part to make it lighter. So thats an issue. The iso's i have 3d printed are working beautifully and have managed to bind together the laser cuts parts very well as pressfits. Am happy to be able to 3d Print parts that press fit so well with lasr cut mdf and acrylic. The electronic quad board module that was developed in my Output week is also working well and the buzzer sounds if IR detects any obstruction as well as the LED light flashes.