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What mini and midi mean in practice
There is no single definition of a mini or a midi lathe. Makers use the words for their own ranges, and one company's midi can overlap another's mini. That is why you should compare two numbers on the spec sheet: the distance between centers and the swing. A general reference on lathes explains both. The distance between centers sets the maximum length of work you can hold between the headstock and tailstock. Swing is the centre height above the bed, and the diameter you can turn is roughly twice the swing.
The reference also warns that in the U.S. the swing is often wrongly treated as the diameter, so read the spec sheet carefully. A lathe sold by a swing figure may be quoting the maximum diameter or the distance from the bed. Check what the maker states, and compare like with like. No figures are quoted here because they vary by maker and model.
In general, minis are small, light benchtop machines, and midis are heavier benchtop machines with a longer bed, more swing and often a more powerful motor. The site's mini wood lathes guide and wood lathes guide show the usual categories.
Bed length: what you can turn between centers
Bed length matters most to spindle turners. When the work is held between the headstock and tailstock, the distance between centers is the longest piece you can turn. The reference describes between-centers work as the most stable arrangement, which allows more cutting force than holding work at one end only. It also advises against overhanging the tailstock past the end of the bed, suggesting an extension or a larger bed instead.
Think about the longest piece you expect to make, then add some room for the drive center, the tail center and the end of the blank. Pens, pen blanks, bottle stoppers, tool handles and small finials suit a mini. Table legs, spindles for stools and bed posts usually call for a longer bed, which tends to mean a midi or larger machine. If a project does not fit, you cannot fix it with technique.
Many machines accept a bed extension, but that depends on the model, so check the maker's accessories list rather than assuming. Accessories and parts differ widely between brands; the headstocks and tailstocks pages show what to look for in the design.
Swing: bowls, platters and hollow forms
Swing is the number for bowl and platter turners. When the work is bolted to a faceplate or held in a chuck on the spindle, the reference notes that the workpiece is held at the headstock end, and lighter cuts are safer than heavy cuts in that setup. A larger swing lets you turn wider and heavier bowls, but a larger piece also demands a heavier machine and a slower speed. A light mini fighting a heavy blank can vibrate or move across the bench.
Small bowls and plates fit a mini, with the limit set by the swing and the weight the lathe can handle. For bigger bowls, a midi is the more comfortable choice, but a serious bowl turner may end up wanting a full-size lathe. Large-bowl lathes sometimes have no bed or tailstock, as the reference notes, which is a different class of machine from either mini or midi.
A heavier machine is not just a bigger machine. Weight, bench stiffness and a stable base affect how a lathe behaves. Sand or weights on a stand can help where the maker allows it. If you are unsure, check the used wood lathe inspection page for what to look at when buying second-hand.
Lathe chuck, drive center and live center
Match the spindle thread and size to your lathe, and check the maker's manual for the thread. Do not guess; a chuck that does not fit your spindle is a return. Used chucks and centers appear often on eBay when a turner upgrades.
Speed range and variable speed
Speed is the part buyers underestimate. The reference describes how headstock speed can be changed with a step pulley, a pulley with back gear or a gear train, and says electronic speed control can make pulleys or gears unnecessary. In practice, variable speed saves you from stopping the lathe and moving a belt every time you change the size of the piece.
It also helps with safety and finish. The reference states that larger workpieces need lower speeds. Starting a big, out-of-balance blank slowly and bringing the speed up as it comes into round is the usual advice, and your manual will say what applies to your lathe. A lathe with only two or three fixed speeds may leave you running too fast for a larger piece or too slow for a small, clean cut. Compare the speed range on the spec sheet, and look at whether the lowest speed is low enough for the largest piece you want to turn.
Check how the speed is changed, how easy it is to reach and whether there is a reverse. If the lathe has a reverse, read the manual before using it, because reversing can loosen some chucks and faceplates. For power, see 120V vs 240V woodshop machines, and if you are planning a long cord for a benchtop lathe read extension cords for table saws and planers, since the same cord cautions apply.
How to choose between them
| You plan to turn | Likely size | Check on the spec sheet |
|---|---|---|
| Pens, stoppers, small boxes | Mini | Spindle thread, center size, minimum speed |
| Spindles and small furniture parts | Midi, or a mini with a long bed | Distance between centers |
| Small bowls and platters | Mini or midi | Swing, speed range, weight |
| Larger bowls and hollow forms | Midi or larger | Swing, motor, base stiffness |
| A bit of everything | Midi | Bed length, swing and variable speed together |
Buying a lathe that is slightly bigger than you need is cheaper than replacing a small one, but a machine that is too big takes bench space and may be harder to use for small work. The cost of accessories also matters: chucks, centers and tools all depend on your spindle, which is why two lathes of similar price can have very different total costs. See the woodshop machine total cost guide for how to budget the whole setup.
Used lathes are common and a good source for midis, and eBay is where many turn up. Ask for photos of the headstock, the ways and the spindle thread, and ask what chucks and tools come with it. Then check the safety page before you start.
Benchtop wood lathe
Use the spec sheet to compare distance between centers, swing and speed range, not the words mini or midi. Check what is included and that the spindle thread matches the chucks you plan to use.
Frequently asked questions
What is the difference between a mini and a midi lathe?
The words are not standardized. A midi usually has a longer bed, more swing and more motor than a mini, but compare the distance between centers, swing and speed range on the spec sheet.
What does swing mean on a wood lathe?
Swing is the centre height above the bed, so the diameter you can turn is roughly twice the swing. Check how the maker states it.
Do I need variable speed?
It is very useful if you turn different sizes, since larger pieces need lower speeds. Fixed-speed lathes can work but need belt changes.
Can a mini lathe turn bowls?
Small bowls and plates, within its swing and weight limits. Larger bowls suit a midi or a bigger lathe.
Can I add a bed extension?
Some models accept one, but it depends on the maker. Check the accessories list for your lathe before buying.
Sources and verification
- Wikipedia: Lathe (a general reference), for the definitions of distance between centers and swing, the note on how swing is often misread in the U.S., the methods of changing headstock speed, the point that larger workpieces need lower speeds and the notes on between-centers, faceplate and large-bowl turning.
The reference does not define mini or midi lathes, so no size categories, dimensions, motor ratings or speed numbers are quoted. Confirm every figure on the maker's spec sheet and the safe operating limits in the lathe's manual.