Showing posts with label milling. Show all posts
Showing posts with label milling. Show all posts

Grizzly G0516 Combo Lathe w/ Milling Attachment Review

Grizzly G0516 Combo Lathe w/ Milling Attachment
Average Reviews:

(More customer reviews)
Almost 40 years ago it was my job to write a technical description of a small Chinese lathe that my employer wanted to offer for sale. I was impressed with the technical skill and workmanship of that first Chinese machine tool offered in North America.
Now I am the owner of a shiny new Chinese combo lathe / mill from Grizzly.
My new machine arrived with much more than was advertised. It has a quick change lathe spindle nose instead of the far more common bolt on style chuck mount.
Included with the lathe was a 3 jaw & 4 jaw chuck plus a face plate whereas most of the similar small lathes offered today come with one bolt on 3 jaw chuck. To round out the chucks there was also a face plate!
When I dug a bit deeper into the lathe accessories I also found a quick change tool post. The tool carriers are grooved for boring bars too.
Although this is a small hobby lathe the tool system can accommodate 1/2" square tools.
When I setup the mill I found it was equipped with a quick change Colet set and a milling vice too!
Does this machine have any down sides? Yes. Are they major? Well, not exactly.
The G0516 is not a geared head lathe. It requires shifting the V belt for spindle speed changes. The new belt is really tight and hard to shift from one groove to the next. Back gearing is by a cogged belt, no gear changes on the spindle.
Feed changes and thread cutting requires mounting different gears. Some of the gear changes provide a bit of a challenge. Thread cutting to a shoulder requires skill and patience (there is no thread dial or spindle brake).
From the very first lathes with automatic feeds/ thread cutting, fitting of the shaft support has been a challenge for the machine fitters. My machine is no exception, the shaft support is misaligned. Winding the carriage to the far right causes the feed screw to bind in the half nut base.
The milling head and column are well made and run well. Removing the installed drill chuck required the application of brute force. Seems this is not unusual, someone else wailed about the problem of removing the drill chuck in another forum. Anyone wishing to precision bore a deep hole would be wise to carry out a careful perpendicular alignment of the milling column. My machine has no indication of any alignment checks by the builder and there is no accuracy certificate with the machine.
Overall I am pleased with the design and craftsmanship of this hobby machine.
I feel it is well worth the modest cost.
One word of caution. This is a heavy piece of equipment. It requires care and forethought before attempting to move it from the solid wood crate to a final resting place. It also needs to be bolted down, albeit the maker has neglected to provide bolt down dimensions!. I used a chain hoist , wood wedges and a counter balance cable between the hoist chain and the end of the lathe bed to keep things on a even keel while hoisting.
I know I will have many hours of pleasure from my new toy!


Click Here to see more reviews about: Grizzly G0516 Combo Lathe w/ Milling Attachment

Precision, versatility and high quality in a small package are what you get with our new G0516 Lathe Mill Combo.The 6 speed lathe includes big machine features like a 4-way turret tool post, cuts both metric and inch threads, see-through eye shield, 3/4 HP motor and a 9 3/4" swing.The milling head features its own 4/5 HP variable speed motor, tilting column, MT#3 spindle taper and 8" of vertical travel.It bolts onto the back of the bed and is sturdy and versatile.This is an exceptional value and will make a great addition to any shop.

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Bolton 7 X 12 Mini Lathe Is Small Yet Powerful Use with Metal, Plastic or Wood Mt#2 Tailstock Taper 3/4 Hp 110 Volt Comes with Standard Accessories and Full 1 Year Warrantty Review

Bolton 7 X 12 Mini Lathe Is Small Yet Powerful Use with Metal, Plastic or Wood Mt#2 Tailstock Taper 3/4 Hp 110 Volt Comes with Standard Accessories and Full 1 Year Warrantty
Average Reviews:

(More customer reviews)
I was undecided on this machine or the Grizzly machine. When I called Grizzly they were never available to talk with me about this machine. I called this company and they are always willing to help. I'm glad I went with Bolton Tools, they have a great price and the quality is the same as the Grizzly lathe. I know because I have a good friend that owns the Grizzly model. I'm glad I saved some coin and got the Bolton machine.

Click Here to see more reviews about: Bolton 7 X 12 Mini Lathe Is Small Yet Powerful Use with Metal, Plastic or Wood Mt#2 Tailstock Taper 3/4 Hp 110 Volt Comes with Standard Accessories and Full 1 Year Warrantty

Lathe Specifications:Distance between centers: 12"; Swing over bed: 7"Dial Calibration on Leadscrew: 0.002"Headstock Taper: MT3#; Lathe Chuck Mount: Bolt-On.Spindle Bore: 4/5"; Spindle Speeds: RPM.Swing over work table: 3-3/4"; Number of thread pitches: 18.Tailstock Taper: MT2#; Spindle nose taper: MT #3.Tailstock quill Travel.Electrical Specifications:Horsepower: 2/5 hp;Voltage:110 Volts.Motor Type A/C; Phase: Single.

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Bolton 12" X 30" Variable Speed Combo Lathe Mill Seperate 3/4 Hp Lathe and Mill Motors , 1" Spindle Bore, 8 1/2" Cross Feed, Mt#3 Spindle Taper, Mill Head Rotates 90 Degrees, 110 or 220 Set Up, Complete with Standard Accessories and 1 Year Warrantty Review

Bolton 12 X 30 Variable Speed Combo Lathe Mill Seperate 3/4 Hp Lathe and Mill Motors , 1 Spindle Bore, 8 1/2 Cross Feed, Mt#3 Spindle Taper, Mill Head Rotates 90 Degrees, 110 or 220 Set Up, Complete with Standard Accessories and 1 Year Warrantty
Average Reviews:

(More customer reviews)
I have been machining for 10 + years and was truly impressed by this machine considering what it costs. I had the pleasure of being able to pick it up and the team at Bolton were professional, courteous and provided an overall great experience.
This machine is so solid I am converting it to CNC immediately!
It is very similar to the Grizzly G9729 model and some Shop Fox machines I have used but has more features then other machines in this class and boasts tight tolerances. I couldn't be happier with my purchase.
I was shocked as to how far my money went - I got more than I expected! This proves that sometimes you don't have to pay more to get more.
Everything is VERY solid and what one would expect from a precision machine. The fact you can run the mill and lathe at the same time is a real plus!
This is a truly professional quality machine at a hobbyist price!

Click Here to see more reviews about: Bolton 12" X 30" Variable Speed Combo Lathe Mill Seperate 3/4 Hp Lathe and Mill Motors , 1" Spindle Bore, 8 1/2" Cross Feed, Mt#3 Spindle Taper, Mill Head Rotates 90 Degrees, 110 or 220 Set Up, Complete with Standard Accessories and 1 Year Warrantty

Machines this inexpensive only have single function capabilities. Giving up the ability to utilize both the lathe and mill simultaneously,our AT-750 is made to assist the machine shop on a budget without giving up features only available on machines with independant function. Use the power feed on our machine for cross feed or horizontal feed. large swing over bed of 12"" distance between centers 29 1/2"", 1"" spindle bore, Tailstock & Mill Taper MT#3, comes complete with standard accessories and full 1 year manufacturers warranty

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Click here for more information about Bolton 12" X 30" Variable Speed Combo Lathe Mill Seperate 3/4 Hp Lathe and Mill Motors , 1" Spindle Bore, 8 1/2" Cross Feed, Mt#3 Spindle Taper, Mill Head Rotates 90 Degrees, 110 or 220 Set Up, Complete with Standard Accessories and 1 Year Warrantty

5C Collet Block Set - Hex Collet Block, Square Collet Block and Collet Closer Review

5C Collet Block Set - Hex Collet Block, Square Collet Block and Collet Closer
Average Reviews:

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High quality, well made, safely packaged and reasonably priced. Shipping was VERY fast! As usaul, Amazon had the lowest listed price and stragely enough, another 3rd praty dealer on Amazon also had the highest price that I could find (almost double). Anyway, I would suggest two improvements: 1) a one page set up guide would have avoided several minutes of frutration for a new hobbyist in the Milling arena and 2) It would have been nice if there was some link to the accompanying collets.


Click Here to see more reviews about: 5C Collet Block Set - Hex Collet Block, Square Collet Block and Collet Closer

For fast, short run, set-ups.Perfect for 60 Degree, 90 Degree, & 120 Degree grinding or milling on parallel flats, squares, triangles (with vee block), hexes, etc.Each block comes complete with ring closer. Takes 5C collets from 1/16" to 1 1/16".Made of tool steel, hardened and ground.parallel and square to +/- .0003".Size 1 3/4" x 1 3/4" x 3 1/4"

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5" X 7" Mini Combo Lathe/Mill Review

5 X 7 Mini Combo Lathe/Mill
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I AM RETIRED. DURING MY WORKING CAREER I WAS RESPONSIBLE FOR MACHINE TOOL ENGINEERING FOR A MACHINE TOOL BUILDER. MY COMMENTS REFLECT THIS BACKGROUND.The machine as offered by Bolton has very limited functionality as a milling machine.
1: No details are offered as to milling space dimensions.
2: It would seem that a riser block is needed to bring any work piece close to the spindle nose.
3: Milling Spindle size is not provided. I think it is 1MT. Where does anyone buy 1 MT tooling in the US?
4: The compound slide and tool post would need to be removed for drilling/milling functions. When this is done there is no dial for Y dimension movement of the saddle. The saddle would now provide Y axis movement.
5: Are the feed screws in inch or metric configuration?
For everyones information, Many Asian machine builders use Metric feed screws. If metric dials are used and the user is aware, measuring for inch machining is not too complicated. However, it is common for builders to cheat a little and use metric feed screws but substitute dials that give inch indications. This works for part of one screw revolution but cumulative errors come into play the more the respective dial is rotated. This is nothing new, European machine builders did the same thing many years ago. It's just frustrating when one is trying to do anything with any degree of precision.
6: A riser block pushes the workpiece well above the machine bed. As the work moves along the X axis (across the lathe bed) support for the over height work is lost and machining accuracy is lost & vibration sets in. Makes for realy poor work surface finish too.
7: Is there a Micro down feed for the spindle? It looks like there might be one but no information is provided. Without it, verticle milling adjustment becomes very difficult without a measuring system.
This link provides some more info (but not much) about the machine and its builder.[...]
Or just Google AT 125.
What else? Well I wanted to buy the machine for my hobby work. But I don't see it
as a wise choice for milling operations.
Perhaps someone else has first hand experience with this particular model?

Click Here to see more reviews about: 5" X 7" Mini Combo Lathe/Mill

Save space, time and money with a machine that does the work of three! It turns, mills and drills! Turns out high-quality parts!comes with standard accessories, three-jaw chuck,drilling chuck, dead center #1, hex wrenches and full 1 year manufacturers warrantty!

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Grizzly G9757 10 pc. 2 Flute HSS End Mill Set Review

Grizzly G9757 10 pc. 2 Flute HSS End Mill Set
Average Reviews:

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As good as any other HSS mill bits. Very sharp, two flute and come in plastic case.

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Priced for outstanding value, this 10-piece assortment of high-speed steel end mills features the following sizes:3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4".Finely-crafted mills are single-ended.Includes wood case.

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