Haven't printed this telescope but I have printed some pretty big things for example a front rack for my wife's bike. It's on the 3rd version, the first one br

Haven't printed this telescope but I have printed some pretty big things for example a front rack for my wife's bike. It's on the 3rd version, the first one broke on small collision (the bike fell over while standing), the 2nd on a big collision (my wife hit a bus stop :/ ). The 3rd version survived several years of daily use including hauling stuff from the mall. The key is to split the design into parts that need to be strong in 2 axis and can be weak in the 3rd axis (to work around the layer adhesion problems). So you print 4 walls laying flat not standing vertically. That plus including rope or zip ties for elastic connections where needed - and you can make stuff that is plenty strong enough for most daily uses. I printed with PLA and PETG and both are ok - PETG is less stiff but handles direct sun better.