Simple and resistant adjustable shelves or tables

prusaprinters

A year ago I tried to make some adjustable shelves and got into all sorts of complicated designs but in the end, the simplest design was the better.       So, with just 3 small STL's(A1, A2 and B) and some wood you can make some really good adjustable tables or shelves that I have tested for about a year in my kitchen. My original project is for shelves but the base of the project is about the simplest way to combine wood with plastic to make good resistant furniture. I. What you need Piece codeDescription1P1cylindrical wood 17.9 mm diameter, the STL is built on this diameter but I guess is simple to change them. This wood will be used as the legs of the furniture.2P2 wood for the tabletop or shelves, I used 6 mm thick wood, the width and length are as you need.3P3 I used PETG, I guess PLA will work also.4 Some wood cutting equipment II.Basic principleAs the cover photo shows the wood pieces P1(cylinder) and P2(tabletop/shelve) are pressed between the plastic pieces. The wood P2 must have holes big enough to enter over A1 and A2 pieces. No metal/screws/glue is used, just plastic and wood.I printed everything in PETG, 20% infill, 0.30mm.For every joint you need to print the following STL's:  A1.stl once, A2.stl once and B.stl twice.When you get to the top of the furniture you need to print Btop.stl to cover esthetically the top.I attached the blender file, here there is a lot of extra data from my previous models, use as you need.If you need to build a high structure and the cylindrical wood is not long enough you can combine multiple wood pieces using STL's  D1, D2 and C as shown in the images.Heavyweights can be places on this structure, I placed 20Kg on such a shelve and is holding fine. I'm actually amazed about the incredible friction generated, I didn't expect such steady furniture, and after a year the shelves didn't slide an inch.And of course you can adjust the shelves up and down as you need by unscrewing A1 and A2 and sliding the shelves. Well, this is not the most elegant slide…but it works.