Grizzly G8689 Mini Milling Machine

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Price: $796.04    

Product Feature

• Now here is a Mini Milling Machine that has more features than some Mill/Drills and is affordable for everyone. This little brute will handle any kind
• No belt changes necessary! The variable speed control and gear drive saves you time and hassle?Truly a remarkable machine
• Features: • Dovetail column • Safety shut off switch • Adjustable depth stop • Fine feed head control • Geared drive • Clear guard on spindle • Rubber

Product Description

Now here is a Mini Milling Machine that has more features than some Mill/Drills and is affordable for everyone. This little brute will handle any kind of job up to 1/2" drilling 1/2" end mills and 1" facing. No belt changes necessary. The variable speed control and gear drive saves you time and hassle—Truly a remarkable machine. Features: • Dovetail column • Safety shut off switch • Adjustable depth stop • Fine feed head control • Geared drive • Clear guard on spindle • Rubber chip guards on ways • Zero setting dials read in Inch • Adjustable dovetail ways on column • 3/8" and 1/2" collets • 1/2" drill chuck • Two T-nuts Specifications: • Motor: 3/4 HP 110V single-phase • Spindle taper: MT -3 • T-slots: 2 @ 1-1/8" centers 7/16" wide • Head travel: 7-1/2" • Head tilt: 45-Degree L/R • Max. distance spindle to table: 11-1/2" • Swing: 12-3/4" • Table travel : 7-5/16" • Table travel : 4" • Table size: 3-5/8" x 15-3/4" • Range of speeds: Variable 0–2500 RPM • Approximate shipping weight: 149-Pound.

Grizzly G8689 Mini Milling Machine Review

As noted by a previous reviewer, this same model (all made by Sieg in China) are available from a variety of sources. I purchased mine from Grizzly, largely because of the support that Grizzly provides. If I were to purchase this same milling machine again, I would probably go with Micro-Mark which is about the same price. The big difference is that the Grizzly version uses 0.060"/turn on the x and y axis and 0.0625"/turn on the Z-axis, while the Micro-Mark uses 0.050"/turn on all axis. It's a lot easier to dial in, say a 0.384 movement at 0.050"/turn than it is to divide 0.0625 into 0.384 to determine the number of full turns and the add'l thousands needed to hit 0.384 exactly.

Anyone considering a small milling machine probably knows that you'll spend nearly as much on tooling as the initial purchase price of the mill. With this mill, plan on additional purchases of a belt drive kit ($120)to replace the noisey, failure prone gear train and an air spring kit ($40)to replace the cheesey torsion spring mechanism. Without the air spring kit, the mill head will occasionally drop 50 thou or so, resulting in an undesired gouge in your work piece. Both kits are available from LittleMachineShop.com (an Amazon supplier).

Provided that you don't push it too hard, this little guy will handle machining of small steel, brass, aluminum, delrin, etc. work pieces with accuracy of +/- a few thou. To do that, however, plan on investing a considerable amount of time on tuning the machine by polishing and adjusting the gibbs and tweaking the nuts on the lead screws to minimize backlash. Besides improving the performance of the machine, this tuning will improve your understanding of how all the pieces fit together to perform the milling function.

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