Review of Juuma planes and fine tuning

[Sergio Escudero]

As the owner of several Juuma planes (Nos. 4, 4½, 5½, and 7) and following my recent acquisition of a No. 4, I feel it’s necessary to share my thoughts on these planes—especially because, when I was looking for information, user reviews were scarce and some created unnecessary doubt about their quality.

The internet is full of excellent reviews of Veritas and Lie-Nielsen planes, but their prices are beyond many people’s reach and not essential for achieving top-level results. China, in the past, earned a reputation for producing cheap and poor-quality tools, but this has been changing in recent years. There is now an emerging market for mid-range and even high-end tool production worth considering. One example of this mid-range (which could easily be considered mid-to-high) is Juuma.

Vintage Stanley and Record planes have long enjoyed a strong reputation and can still be an excellent value if you’re willing to invest time in restoration and tuning. This seems to suggest a large gap between vintage planes and the modern high-end, but that isn’t really the case. Juuma planes improve on many aspects of the classics: ductile, non-brittle cast iron; thicker, heavier castings; Bedrock-style frog design; thicker irons and chip breakers; use of brass fittings; finer machining and smoother finishes.

With all Juuma planes, if you want maximum performance, you’ll need to invest some time in fine-tuning and improving the factory setup—but even without that, after a simple sharpening, they perform very well. This is normal with any precision machinery: it requires shop calibration, and no factory can deliver an absolutely perfect setup.

Below I detail the steps I follow for fine-tuning and how the planes arrive from the factory.

SOLE

The sole comes flat—very flat—more than adequate for immediate use. I lap the soles of all my planes smaller than the 5½, since those benefit the most from perfect flatness. Flattening can be done on a surface plate with medium-grit sandpaper—or in my case, on a 300-grit diamond plate. During the process, you’ll usually find that the toe and heel are slightly high, leaving the area around the mouth slightly hollow. The goal is even contact around the entire perimeter, especially before and after the mouth (though complete flatness between mouth and toe is ideal). A subtle hollow behind the mouth or heel is acceptable. After flattening, I polish the sole with 400-grit paper wrapped around a precision block. The difference in feel compared to the factory finish is obvious—the surface becomes noticeably smoother.

MOUTH

All my Juuma planes arrived with the mouth square and cleanly machined. If small imperfections appear, they’re easily corrected with a fine needle file. This step can also be done simply to achieve a neater finish. The mouth comes set toward its most open position, and you may wish to move it forward for a tighter mouth opening.

SIDES / SQUARENES

The sides are square to the sole. This only matters if you intend to use the plane on a shooting board, as with the 5½, which is the common size for that purpose. If not, I don’t recommend attempting correction unless the deviation is very minor—it’s time-consuming and returning the tool is the better option. In all other cases, even a noticeable deviation has no effect on performance.

FROG, YOKE, DEPTH ADJUSTER & CAP

All of these parts are made of brass, which I find visually and mechanically appealing. The frog uses the traditional rectangular pattern, predating the ogee style found on later vintage planes. It comes perfectly flat and finely polished, showing no machining marks. It’s attached with steel pins and can be adjusted from the rear without removing the iron, which makes setup easier—though it’s something you’ll rarely need to do. The yoke pin that engages the chip breaker fits tightly with minimal play. The fork that engages the depth-adjustment wheel has a bit of movement, which is typical. It’s tighter than in vintage planes and better than in some tools of comparable range, though perhaps a step behind Lie-Nielsen. No complaints here.

As for the threaded mechanism and brass depth-adjustment wheel: excellent. The thread is fine, with zero backlash between screw and wheel. The wheel itself is wide and of large diameter, providing good torque and allowing precise blade projection control in minute increments. The cap-iron contact surface comes ground and lapped, but I always touch it up on my 1000-grit diamond stone and lightly refine the edge.

IRON AND CHIP BREAKER

This is the only weak point. The iron, at 3 mm thick, is probably made of T10 steel—comparable in behavior but not identical to O1 or A2. In practice, I find it perfectly adequate for most work: it takes a very keen edge and is hard, but it needs slightly more frequent honing. The back of the blade always requires careful flattening up to the finest grit possible. Of the six Juuma blades I own (excluding two spares—one unused and the one from my new No. 4), all required some flattening. Usually this was mild but consistent; importantly, the blades were slightly concave, with the edges contacting the stone, rather than convex—a positive sign.

The main issue lies in the chip breaker. It’s 3 mm thick. On my No. 4 it was nearly perfect, needing only a few passes on the diamond plate, but on the other three I had to spend considerable time truing them. On one I even had to lightly hammer out a deformation to ensure perfect contact. After correction, I polish the upper bevel, which arrives with fairly coarse machining marks. Once tuned, all my chip breakers now mate perfectly with their blades.

LATERAL ADJUSTMENT LEVER

I have mixed feelings about this part. The lever is a simple stamped and bent steel piece, typical of lower-cost planes. It’s firmly riveted to the frog, with no play at all, comfortable to use, and works well—but the movement might be smoother if Juuma had used the vintage-style lever with the small bearing at the end. This detail slightly detracts from the otherwise excellent overall quality of the plane.

HANDLES

I’m not sure what wood Juuma uses. It appears to be a fine-grained, medium-hard wood. They’re attractive, well-sized, comfortable, and nicely finished. None were loose, though a couple were left slightly under-tightened—probably to allow for wood movement during storage and shipping. A quick snug with a screwdriver fixes it. The visible screw heads are brass.

PRICE AND OVERALL QUALITY

The price-to-quality ratio is unbeatable. They typically range from €190–240, though if you wait for the right moment, you can find them up to €50 cheaper. I bought my 4½ for €150, and I believe the 5½ as well. Dictum, the main retailer, occasionally offers discounts of up to 25%.

The brass parts, to me, are a big plus both visually and mechanically. Overall quality is very high: all my planes arrived spotless, rust-free, and generously oiled.

Would I recommend them to a beginner? Absolutely.
Would I recommend them to someone used to vintage planes looking for an upgrade? Without hesitation.

It’s worth noting that all the adjustments I’ve made on these Juuma planes I’ve also had to perform—more extensively—on vintage planes, including my Stanley No. 8 SW Type 15 and my various Records from 1931–1959. My goal is simply to shed light on this: to demystify the idea that Chinese planes are bad or not worth it. Rob Cosman uses WoodRiver, German Peraire uses Dictum, and even Paul Sellers speaks highly of Juuma—all of them Chinese-made planes.

 

 

[Botch]

Excellent review, Sergio; thank you.  I'm not sure if Juuma planes are even available (yet) in the US.  

I have a mix of (British) Records and Cliftons, (US) Lie-Nielsens, Bridge City, and Stanleys, and my newest, last* plane, (Canadian) Veritas #4.  I've flattened the soles of all my Stanleys, Records and (sadly) Bridge City, using a 1/4" x 4" x 24" piece of "float glass" with glued-on sandpaper; the LN's and Veritas arrived dead-flat.  

Hardware build/quality has always been a fascinating subject to me.  The Germans, Swedes, and US used to lead the world in quality manufacturing.  When the first Toy-YO-tahs and Ya-MA-hahs arrived on US shores, they were garbage.  They soon adopted the principles of the Father of the Quality movement, a German-American engineer and statistician Edward Deming, while the US manufacturers started listening more to accountants/shareholders than the quality guys.  During the '70s-'80s, the Japanese cars soon dominated (that pendulum is swinging back now, thank goodness).  

From '87 to '92, I was a safety engineer for all United States Air Force ground equipment that handled nuclear weapons.  During that time I got an alert that some Grade 7 nuts holding helicopter blades to the vehicle gave way, and a bunch of Army soldiers got killed.  The nuts were tested and found to be of Chinese manufacture, and were actually Grade 5 but marked as Grade 7.  We found out later that the US importer ordered them that way, to increase profits; wasn't the Chinese manufacturer's cheat.  

Today Chinese manufacturing is top-level (when they want to be, AND when they're paid to be), and the various government/tariff factors play a large part in the costs (I promise, moderators, I won't go any further that direction!).  Their patent/trademark laws are quite lax which is why you can buy recent Woodpecker/Katz-Moses design knockoffs from no-name Chinese manufacturers for much lower prices.  I've purchased a few high-quality tools from Temu and banggood.com very inexpensively, but not so much lately.  

Sorry I've blabbed so long, having degrees in ME and IE and working in this area, it's fascinating to me and even in retirement I like to follow the ebb and flow.  

 

*I've called so many tool purchases "my last"; stay tuned.  

Edited November 9 by Botch
Forgotten addition

[Sergio Escudero]

On 11/9/2025 at 3:05 AM, Botch said:

and (sadly) Bridge City

I understand that Bridge City is manufactured in China. They are not cheap at all, so for those prices I expect the owner to come and deliver it to me personally.

[Mark J]

11 hours ago, Botch said:

The nuts were tested and found to be of Chinese manufacture, and were actually Grade 5 but marked as Grade 7.  We found out later that the US importer ordered them that way, to increase profits; wasn't the Chinese manufacturer's cheat.  

I remember that story.  Makes me angry all over again.    But I digress.

Sergio, excellent and thorough review.  Thanks for taking the time to write it.  I supose the trick with made in China items is to understand what quality level/price point that factory was targeting. 

[wtnhighlander]

"Today Chinese manufacturing is top-level (when they want to be, AND when they're paid to be)"

I think this applies to any manufacturing situation. There is no escaping the "Speed / Cost / Quality" triangle (pick any two), no matter who makes the component.