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Manual Mill

Status Operational as of February 2021
Training Required
Hackable NO
Usage Restrictions Members Only, only after VHS training / orientation
Owner Mark Denny (friend of JohnC)
If it Breaks Attach “Out of Order” sign / note. Post to Talk and Slack, contact area Champions
Loan Status Long Term Loan
Arrival Date November 2013
Location Machine Shop
Champion See Compendium of Champions


Always wear eye protection while using the mill. VHS-specific training / orientation is required. If used improperly, workpieces or pieces of cutting tools can be thrown around the shop at high velocity.

Specifications: Mill

Mill is a Long Chang LC-15A. Very little info for this mill is available online.

Please review this Basic Manual

The following information was measured from the mill and may be inaccurate.

Spindle Taper: MT3 - Morse Taper #3

Table: 1/2in T slots


To move mill head up and down (major vertical adjustment); you need to loosen two nuts on the right-hand-side of the head, and use the crank on the left-hand-side of the mill to raise or lower. Retighten securing bolts before use (when loose, crank has huge slop).


X/Y - handwheels on table

Z - large grab handle on right of mill, or handwheel on front of mill. Black locking ring on grab-handle on right of mill engages/disengages handwheel. This axis can be locked via the small black lever on the front-left of the mill head.


The 3.5“ swivel vise can be bolted to the table via T nuts / bolts. Never assume that the vise is aligned correctly; use a dial indicator to check.

We have a set of 1/2in T nuts + fingers + step blocks for the CNC mill that will also fit this mill.


- Drill Chuck - at the moment, the only chuck key that fits is on the drill press in the Fab shop area. - 2x Offset boring heads - Fly cutter. Takes an HSS toolbit, ground to the correct profile - 1/4, 3/8 and 1/2 collets. Used to hold end mills, fly cutters, and the small boring head - 2.5” face mill. Needs to be replaced, as all the carbides are chipped, and are not available for purchase. Still works reasonably well - Drift keys. USe to remove the tooling from the spindle. See document (pending) for use. - (many more in varying condition) - (Most) tooling is located in the red toolbox in the end of the (pending) work bench.

Speeds & Feeds

Cutting speeds can be determined easily by using this cutting speed nomogram. The original cutting speed nomogram came from Ian at the BCSME.


A written tutorial won't suffice! Don't touch the machine unless you've received training!

Maintenance Log

Note Date Who
Wiki entry created Nov 20, 2013 Thomas L.
Wiki entry updated Nov 27, 2013 QuanaParker
Vice alined and bolted to table Nov 26, 2013 QuanaParker
Tool/Work bench built grizzly_toolbench_img_3981.jpg grizzly_toolbench_img_3983.jpg Nov 26, 2013 QuanaParker
New drawbar, drift keys Feb 2020 Billiam
tool/green_manual_mill.txt · Last modified: 2023/02/09 20:43 by androidlx

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