I don’t want to be Stubborn everyone talking here give an opinion and realistic of gantry flexi how you said should no be, im try to do precise the way I want but every message turned my idea opposite way than I thought but nothing wrong when i have not much experience better have a good idea before to spend the money in wrong Direction is frustrating, becouse of the space i want to do in this way and when you explain to me will be flexi I thought talking about rails and carriage so you talking about a lot of weight there so i have to reconsider my frame design if i want to do like this, probably big section square of steel with thick wall