Best 4×8 or 5×10 Wood CNC Router — Drilling 4×4 Posts, Cutting Plywood

FAQ / Author：ROCTECH Engineer Team / Published: Jun 17 , 2026 / Last Updated： Jun 17 , 2026

For Drilling Posts + Cutting Sheet Goods — What Matters

Your use case (drilling the sides of 4×4 posts + cutting ¾" plywood) needs two things most buyers overlook: Z-axis clearance and spindle torque at low RPM.

Vacuum Pump Selection for 4×8 Tables

Pump Type	Typical CFM	HP Range	Best For	Price Range
Regenerative blower (Becker)	150–400 CFM	5–10 HP	Full-sheet plywood, MDF (porous materials OK)	$2,000–5,000
Rotary vane (Busch)	50–150 CFM	3–7.5 HP	Non-porous: plastics, solid wood, aluminum	$3,000–8,000
Liquid ring	100–300 CFM	5–15 HP	Heavy industrial, dusty environments	$5,000–12,000

Recommendation for wood shops: A regenerative blower (Becker 5HP) with zone-controlled table is the sweet spot. ROCTECH's RC1325 supports vacuum table zoning — you close off unused zones to concentrate suction on smaller workpieces. This is critical when cutting partial sheets or smaller parts.

Power Requirements — Single-Phase to Three-Phase

Most industrial 4×8 routers require 3-phase power. If your shop only has single-phase:

Rotary phase converter: $1,200–3,000. Provides true 3-phase. Best for machines with multiple 3-phase motors.
VFD-based conversion: $500–1,500. Works if only the spindle needs 3-phase.
ROCTECH option: some RC1325 configurations can be built for single-phase 220V. Confirm at order time.