Comparing Sienci Labs

	PwnCNC’s Spindle System	Sienci Labs Spindle System
Price	$895 (1.5kw 80 Air-cooled) Boot $6-$150 (maker files available)	$515
Motor	80mm Air-cooled 1.5kW spindle	80mm Air-cooled 1.5kW spindle
Bit Capacity	ER20 up to ½” shanks	ER16 up to 3/8" shanks
Dust Boot	Available Separately (ranging from $6 for maker files to $150 for complete product depending on boot chosen)	80mm/4” Dust Boot
VFD Enclosure	Pre-wired and feature-rich Enclosure with Plug-n-play inlet ports.	No mention of an enclosure, unlikely to include one.
Wiring/Programming	6 meter shielded spindle cable, pre-programmed VFD unit Spindle cable extensions available.	5 meter spindle cable, no mention of shielding pre-programmed VFD unit
EMI AC Filter	AC Filter (Inside VFD enclosure)	No mention of EMI AC Filter
Power Requirements	110v or 220v options available	110v option only
Speed Control	Automatic control via CNC’s controller or via Manual Override and VFD’s keypad	Automatic control only
Collets	Includes 1/8", 1/4", and 1/2" ER-20 collets	Includes 1/8", 1/4", and 3/8" ER-16 collets
Wrenches	High quality and thick collet wrenches	Basic Collet wrenches
Warranty	20-Month VFD warranty against manufacturing defects 6-Month Motor warranty against manufacturing defects	No mention, likely 12-mo
IoT Plug	Built into enclosure IoT Power Strip sold separately which will automatically start/stop your chiller/pump and extraction system.	Not offered, available, or mentioned
Run Relay	Built into enclosure	Not Included
ATC Compatible	Yes, Our spindle systems are fully upgradable to an Automatic Tool Changer. Checkout our latest Youtube video where Daniel is installing our ATC onto his Shapeoko 5 Pro CNC machine.	No
Programming Locked Down	No, we believe thoroughly in openness and transparency. It's your spindle system after purchase, you should have the ability to explore the features and expand functionality. VFD manual available	Unknown
Relocatable VFD Keypad	Yes (variety of mounting options available and uses standard cat5 computer cable) The ability to relocate your keypad allows you full control over your VFD and Spindle Motor.	No
Manual Override Switch (MOS)	Yes, Running your spindle in manual mode allows you to easily surface your wasteboard by jogging around. MOS allows you to control your spindle the same way you would a palm router.	No
Relocatable MOS	Yes (requires special 2-wire cable) This allows you to relocate the MOS alongside your VFD's Keypad.	No
Braking Resistor Port	Yes (plug-n-play braking resistor sold separately) Braking resistors allow your spindle motor to slow to a stop faster which improves your workflow and lets you pump out more products faster.	No
Shielded Spindle Cable	Yes (shielding prevents EMI interference with your stepper wires)	Unknown
Machine Compatibility	Any / All machines We work very hard to provide compatibility with any and all CNC machines on the market. This allows you to easily switch machine brands and take your spindle kit with you.	Compatible and supported for AltMill’s ONLY.
No-Leak Kool Connectors?	Yes available separately for water-cooled motors +80 We've partnered with Koolance to offer these unique motor mounted no-leak coolant connectors. Allowing you to disconnect your coolant tubes for maintenance without making a big mess.	N/A, Air-cooled motor option only
Testing and Break-in	Yes	Unknown
US-Based Support	Yes	No