openscad battery holder

use the openscad
/* [Main Settings] */
show_rails = true;
show_rail_front = true;
show_rail_back = true;
show_top_block = true;
show_bottom_block = true;
lay_flat_for_print = false;

/* [Global Tolerance Control] */
// Increase this by 0.05 if parts are impossible to press together
overall_tolerance = 0.15;

/* [Battery & Gap] */
battery_gap = 65.0;
// Tightened cell diameter (standard is 18.6, 18.8 allows for wrap)
cell_d = 18.7;
cell_spacing = 20.2;

/* [Rail Settings] */
rail_overlap = 5.0;
// Tight fit for the dovetail rails
rail_clearance = 0.15;
rail_A_rotation = 180;
rail_B_rotation = 0;

/* [Hardware: Press-Fit M3] */
total_h = 12.0;
wall = 3.0;
corner_radius = 2.0;
// Tight M3 bolt hole
m3_bolt_d = 3.2;
// Snug fit for M3 Nut (Standard is 5.5mm flat-to-flat)
m3_nut_d = 5.8;
m3_nut_h = 2.4;

/* [Hidden] */
strip_w = 10.5;
strip_t = 1.5;
body_x = cell_spacing + cell_d + (wall * 2);
body_y = cell_d + (wall * 2);