Gustave Build : Woodworking router

[Gustave]

Hi,
Here are some update on the design :
1+ 670mm width of the table -> 800mm
2+ steel bed -> 160x80 + 40x80 aluminium profil (270e for WS 105+207 is the price of the 80x160 alu profil…)
3+ the machine is placed on the steel base
4+ 100x100x5 -> 80x80x5 for the base
5+ base is cut in several parts
6+ thickness of the gantry side plate : Aluminium 20mm -> 15mm
7+ HGW carriage on X and Y axis
8+ side of the Z movable part is now turn on the Z fixes plate (more clearance around the spindle)
9+ clearance between Z carriage 107mm -> 170mm
10+ clearance between X carriage 245mm -> 295mm
11+ height of the gantry 360mm -> 400mm
12+ indirect transmission on all ball screw 2:1 or 3:1




Questions :
#1: 25mm pitch ballscrew are very expensive (only french supplier or TBI) Fred don't have so for the moment I keep 10mm pitch. I can go on 32mm to increase max rpm of the Ballscrew (not so expensive upgrade) ?
#2: what do you think of the following servos motors sizing 400w for the Z with brake, 400W for Y and 750W for X ?
#3: recommandation for "low cost" and CSMIO IP-S well documented or easy wire servos driver
#4: central ball screw is still relevant with the slight increase of the width ?