Insulation wall plug

I designed this model to mount lightweight things (lights, wall plugs, thermostat sensor,…) to the outdoor walls of my house.The brick walls are covered with insulation plates and plaster, which makes it very difficult to securely screw someting into it. This will help, but keep in mind that these will not carry more than 5-10kg.You've got these from Fischer (FID plugs) but 6 euros for 2 pieces gets expensive fast.For the best print results, print them in impact resistant PLA with the following notes:NO SUPPORTS needed (the spiral structure lends itsself very well to large overhangs without supports)Print at very high temperature (for good layer adhesion)Cooling is necessary but not 100% (I use 50%)0,2 layer height is possible, but 0,1 gives a smoother screwing edge and requires less coolingI used:Fiberlogy Impact PLA245°C nozzle60° bed100mm/s0,1mm layers50% coolingI've tried a lot of other filaments, all of which had same strenght or lower than the impact PLA. Destructive test