15″ Extended Mill Column

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Product Description

About the 15″ Extended Mill Column

The standard mill column is 11″ long and has about 6″ of travel. This extended column is 15″ long, adding 4″ to the travel for a total of over 10″. If you need more height due to drilling or boring deep holes or working with tall setups, here is a way to do it without adding riser blocks. The column is available in two versions, standard and CNC. The CNC version is a few dollars more due to the extra drilled and tapped holes for the stepper motor mount. It also does not have the hole drilled at the top for the thrust collar, so it cannot be used on a manual mill.

You can order it as an option on a new mill, or as an updated replacement for your current Sherline mill. You will also need to purchase the appropriate leadscrew.


We do not charge a flat rate for shipping because of the variations in weight for our products. Instead we charge you what the shipping company charges us. Our website uses a shipping calculator based on the daily rates for USPS and UPS based on the weight and destination of the shipment. You can also have us use your UPS/FedEx account number to charge your shipping to. Just enter it in the appropriate box on the checkout page.

Domestic orders are shipped Monday – Friday. Expedited orders must be placed by 9 am PST to ship the same day.

Orders shipping ground have a processing time of 7 working days for domestic orders and 14 working days for international orders. Click here for more information on our shipping and order policies.


Most merchandise can be returned within 30 day of the purchase date. A refund will be issued to the original form of payment at the original selling price. View our complete return policy and/or start your return online here.