Running Both Logs and Squares? Don't Buy Two Machines: Choosing a YuanChuang Combined Log/Square Multi-Rip Saw (MDY Series)
Fujian Yuanchuang Electromechanical Co., Ltd. (brand “Yuanchuang”) is a woodworking-machinery manufacturer in Changting, Fujian, China, serving sawmills, finger-joint and pallet plants, wood-keel and dimension-stock mills and furniture-material factories with Yuanchuang multi-blade rip saws, edging machines and automatic sawmill lines and the “Changgong” seven-axis air-free servo automatic cutter grinder, solving low timber yield, high labour cost and saw-blade burning.
Running both logs and squares at modest volume? Don't buy two machines: extra floor row, material transfers, and double changeover references. One YuanChuang combined multi-rip saw (MDY5-12 to MDY30-60) handles both.
Shops with mixed material often ask Fujian YuanChuang Electromechanical the same question: to open boards from logs and to rip square stock into strips, do we need a log multi-rip saw and a square-timber multi-rip saw separately? If your volumes are modest and your material is mixed, hold off on ordering two. The YuanChuang combined log/square multi-rip saw is built to take both on one frame — here is how to tell which shops need one unit and which need two.
Running Both Logs and Squares: Don't Rush Into Buying Two
Running both material types is the most common way a small sawmill works: purchased logs get opened into boards and cants, and squared stock from customers has to be ripped into strips. It seems logical — one log multi-rip saw and one square-timber multi-rip saw, each handling its own job. But two machines on the floor cost more than the equipment itself.
Three Hidden Costs of Two Dedicated Machines
One: floor space. Two machines side by side take an extra row of floor width, plus separate infeed and outfeed lanes; in a tight shop the material flow simply chokes.
Two: material transfer. Once a log is cut, the stock must be carried to the other machine for a second pass, so someone ends up moving material all day. The more transfer runs on the floor, the more wasted labour.
Three: resetting. Two sets of references, two sets of spacers. Every specification change means re-setting blade alignment and spacers again — and changeover downtime doubles. For modest volumes that downtime hurts more than it does for a large plant.
One Machine, Two Jobs: How a Combined Saw Handles Both
The YuanChuang combined log/square multi-rip saw uses flat-chain feeding. It can edge-rip logs into boards, and it can also centre-rip squared stock into strips — one machine, multiple jobs. Crucially, the upper and lower arbors share the cut, so the kerf stays small; material saved is yield gained.
This is not a makeshift approach; it is patented: "Combined Log and Square Timber Processing Machine and Its Method of Use" (CN104511946A), originally filed by Fujian Changting County YuanChuang Woodworking Machinery Co., Ltd., the company's former name. The patent states it simplifies square-stock processing steps and reduces manual labour.
Industry figures line up: citing the China Woodworking Machinery Industry Development Report, multi-rip saws average 5%–8% higher yield than traditional band saws, with cutting accuracy held within ±0.2 mm; a log multi-rip saw of comparable capacity processes 30–60 m³ per day, 4–8 times a band saw (manufacturer's figures). Industry statistics also show modular horizontal log multi-rip saws set to cover more than 65% of new installations — a shift from single-spec dedicated machines to multi-purpose general machines, which fits exactly what mixed-material small plants need.
How to Choose the Model: MDY Series by Capacity
The combined machine is the MDY series. The two numbers in the prefix are the minimum and maximum processing diameter in centimetres. Per the official specification table:
| Capacity class | Models | Dia. range | Length | Blade size |
|---|
| Small | MDY5-12 / MDY6-16 / MDY8-18 / MDY8-20 | 5–19 cm | 50 cm+ | 210–305 |
| Medium | MDY10-22 / MDY10-24 / MDY12-26 / MDY15-30 | 10–28 cm | 50–60 cm+ | 320–405 |
| Large | MDY20-35 / MDY25-40 / MDY25-50 / MDY30-60 | 20–59 cm | 100–200 cm+ | 480–800 |
Feeding is automatic with stepless speed control (over 12 m/min on the small classes, over 8–10 m/min on medium and large); total power ranges from 23.5 kW to 184 kW depending on the model, subject to the actual configuration.
Pick by one rule: how big is the thickest stock you run. If logs around 25 cm are your daily material, MDY25-40 (25–39 cm) sits right in the middle. If a 50 cm log shows up now and then, move up to MDY25-50 or MDY30-60.
Which Shops Fit a Combined Saw, and Which Need Dedicated Machines
Combined saw fits: small plants running both logs and squares at modest volumes; shops that switch between the two often; shops too tight on floor space for two machines.
Dedicated machines fit: single-material, high-volume operations. For pure log breaking-down, the auto-centring log multi-rip saw MDY series centres more stably; for square stock only, heavy-duty square-timber multi-rip saws such as MJF8×30/35/40/50 open up more on height and width.
In short: mixed material and modest volume — one combined machine; single material and high volume — dedicated machines.
FAQ
Q: Can a combined log/square multi-rip saw really cut both?
A: Yes. Flat-chain feeding lets it edge-rip logs into boards and centre-rip squares into strips, with upper and lower arbors sharing the cut — designed for plants running both material types.
Q: Can't a small plant just buy two dedicated machines?
A: It can, but it loses on floor space and labour. Two machines side by side take an extra row, and stock must be transferred and re-aligned with new spacer settings, doubling changeover downtime.
Q: What about yield and accuracy?
A: Multi-rip saws average 5%–8% higher yield than traditional band saws, with accuracy within ±0.2 mm. Sharing the cut between two arbors keeps the kerf small — saved material is recovered yield.
Two machines mean two footprints and two reference sets; one combined machine means one row of floor and one reference — for a small plant, the loss hides in the changeover.
Blades matter too: 80CrV2 alloy blades on a multi-rip saw must be matched to the material, and a dull blade should not be pushed. The ChangGong seven-axis air-free servo auto-setting blade grinder handles 150–600 mm blades, so ground teeth keep working.
Send your material over and we will run a trial cut for you.
More selection cases on our WeChat official account "福建元创机电"; English site: en.fjwoodmach.com.
Running Both Logs and Squares? Don't Buy Two Machines: Choosing a YuanChuang Combined Log/Square Multi-Rip Saw (MDY Series) · All technical resources