V-Slot 20 x 80mm

Linear Rails are they better than smooth rods? linear rail vs v slot I'm curious if anyone here has thoughts on utilizing something like MGN15 linear rail and carriages for a 3000mm Y axis rather than V-wheels linear slot diffuser residential Train A is moving along two parallel rail tracks towards north with The instantaneous velocity of a particle moving in a straight line is given as $$V

linear slot diffuser plenum box sizing linear rails not quieter If anything they are louder They are definately more sturdy but not quieter