|Status||Operational as of March 2020|
|Usage Restrictions||Members Only, only after VHS training / orientation|
|Owner||(VHS or Name of proper owner)|
|If it Breaks||Attach “Out of Order” sign / note. Post to Talk and Slack, contact area Champions|
|Arrival Date||November 2013|
|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.
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: Measured ~3.215in long, 0.8in minor diameter, 0.95in major diameter. Very close to Morse #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.
A written tutorial won't suffice! Don't touch the machine unless you've received training!