Delta Model 10 Radial Arm Saw: What to Know Before Buying Used

The Delta Model 10 radial arm saw — built in the 1950s through 1970s under model numbers 33-830 and 33-990 — is a 1.5 to 2HP cast-iron tool that delivers 16-inch crosscuts and remains worth buying used, but only when its blade guard and anti-kickback fingers are present and intact. Missing safety components are increasingly hard to source, and a used saw without them is unsafe to operate. This guide covers the two main model variants, exact cutting specs, the mobile base dimensions you need for shop layout, and an 8-point pre-purchase inspection checklist.

Features And Specifications

The Delta Model 10 radial arm saw was engineered for workshop precision across a wide range of cut types. Its adjustable arm, enclosed motor, and positive miter stops make it adaptable for crosscuts, rip cuts, miter cuts, bevel cuts, and compound cuts — all from a single stationary setup.

Precise Cutting Capabilities

The Delta Model 10 radial arm saw delivers 16-inch crosscut capacity at a 1-inch depth of cut, dropping to 2-3/4 inches at 90 degrees and 2-1/2 inches at a 45-degree bevel. Its adjustable arm positions the blade accurately for crosscuts, miter cuts, and bevel cuts, covering cabinet work, shelving, and finish trim with consistent results. The 26-1/2-inch out-rip and 16-inch in-rip capacity add workpiece flexibility that a miter saw cannot match.

Powerful Motor And Blade

The Model 33-830 ships with a 1.5HP motor; the Deluxe 33-990 steps up to 2HP. Both run 120/240V with an automatic electro-mechanical blade brake that stops the blade within seconds of shutoff. The 10-inch blade mounts on a 5/8-inch arbor — a standard size still widely available in crosscut, rip, and combination configurations. For used-saw buyers, testing the blade brake before purchase is essential: a brake that fails to stop the blade promptly is a safety risk and a repair cost.

Easy Adjustments And Controls

The Delta Model 10 features positive bevel stops at 0, 45, and 90 degrees plus positive miter stops at 0 and 45 degrees in both directions. Controls sit at the front of the machine for easy reach during operation. The arm locks securely at each stop, reducing the chance of drift mid-cut — a key accuracy advantage over older radial arm designs that relied on friction-only locking. When inspecting a used saw, check each detent position by feel: a worn detent that does not click and hold firmly needs replacement.

Durable Construction And Stability

Delta built the Model 10 on a cast-iron frame with a steel arm column, giving the saw enough mass to dampen vibration during heavy cuts. The 27 x 44-inch table surface at 34 inches of height matches standard workbench height, which simplifies workpiece support when crosscutting long boards. Many of these saws have run continuously since the late 1960s with minimal rebuilding, which speaks to the cast-iron construction quality — though it also means a used unit may have 50 or more years of use on its bearings.

Delta Model 10 Specs and Model Numbers

Two primary production variants exist. The base model carries designation 33-830 and the upgraded Deluxe is the 33-990. Both use a 10-inch, 5/8-inch arbor blade but differ in motor output and were manufactured across different production decades. Knowing which model you are buying matters for parts compatibility and expected power output.

Spec	Model 33-830	Model 33-990 (Deluxe)
Motor	1.5 HP, 120/240V	2 HP, 120/240V
Blade size	10 in., 5/8-in. arbor	10 in., 5/8-in. arbor
Crosscut capacity	16 in. at 1-in. depth	16 in. at 1-in. depth
Depth at 90 deg.	2-3/4 in.	2-3/4 in.
Out-rip capacity	26-1/2 in.	26-1/2 in.
Table size	27 in. x 44 in.	27 in. x 44 in.
Table height	34 in.	34 in.
Shipping weight	~175 lbs	~175 lbs

Mobile Base Dimensions for the Delta Model 10

The Delta Model 10 table measures 27 inches deep by 44 inches wide with a 34-inch work surface height and a total footprint (including the column base and motor overhang) of approximately 28 inches deep by 46 inches wide. When selecting a mobile base for your radial arm saw setup, choose one rated for at least 200 lbs with a minimum platform of 26 inches x 42 inches. Heavy-duty adjustable mobile bases in the 24-to-30-inch by 36-to-48-inch size range fit the Model 10 footprint; confirm the base’s load rating before purchasing — the saw and fence extension table together exceed 150 lbs.

📊 Delta Model 10 specifications confirmed from the Model 33-830 Instruction Manual (Delta Machinery Corporation) and Model 33-990 production records: 1.5HP/2HP motor, 16-in. crosscut at 1-in. depth, 27×44-in. table, 34-in. height, 5/8-in. arbor. — Source: Delta 33-830 Instruction Manual, Delta Machinery Corp.

What to Inspect Before Buying a Used Delta Model 10

The Delta Model 10 radial arm saw is worth buying used when it has been properly maintained and its safety components are intact. Before handing over any money, work through these eight checks in order — the first three are safety-critical and should cause you to walk away if they fail.

1. Blade guard present and intact: The nose of the guard must be able to press against the workpiece during crosscuts. A missing or cracked guard is not just unsafe — replacement guards for vintage Delta saws are scarce and expensive. Walk away if the guard is absent.
2. Anti-kickback fingers attached: The anti-kickback assembly sits behind the blade during rip cuts and prevents the workpiece from being thrown toward the operator. These must be present, undamaged, and able to move freely. Missing anti-kickback parts are a no-buy condition.
3. Arm detent test: With the saw unplugged, rotate the arm to each stop position — 0, 45 left, 45 right, and 90 degrees — and feel for a positive click and hold. A worn or loose detent produces inaccurate cuts and indicates the locating hardware needs repair.
4. Carriage travel: Pull the carriage toward you and push it back along the arm. Movement should be smooth with no binding, grinding, or looseness. Worn carriage bearings are rebuildable but add cost and downtime.
5. Motor and blade brake: Plug in the saw (if the seller permits) and run it briefly. Listen for grinding or bearing noise. After shutoff, count how many seconds until the blade stops — a functioning electro-mechanical brake should stop a 10-inch blade within two to three seconds.
6. Blade alignment: With the saw unplugged, use a straight edge against the blade and fence to check parallel alignment. A blade that is not parallel to the fence produces cuts that bind or drift.
7. Rust and table condition: Surface rust on the table is usually removable with a rust eraser and paste wax. Deep pitting or warping of the table surface is a more serious issue that affects cut accuracy.
8. Power cord and switch: Inspect the full length of the cord for cuts, fraying, or tape repairs. Verify the on/off switch snaps decisively to both positions. Replacing a damaged cord is straightforward; a faulty switch may require an electrician.

“The biggest mistake buyers make with vintage radial arm saws is assuming they can find replacement safety parts later. With Delta Model 10 units, the blade guard nose piece and anti-kickback assembly are the two most commonly missing parts — and they are the two most critical ones. If they are not on the saw at purchase, plan to either fabricate them or move on.”

Getting Started With The Delta Model 10

Once you have a verified Delta Model 10 in your shop, proper setup is the difference between an accurate saw and a dangerous one. Follow these steps before your first cut.

Setting Up The Saw Properly

Before making any cuts with the Delta Model 10, complete this setup sequence in order:

1. Choose a suitable location: Find a sturdy, level surface that can support the saw’s 150-plus-pound weight and provides at least 3 feet of clearance on all sides for workpiece handling.
2. Secure the saw: Attach the saw to a workbench or dedicated stand using appropriate mounting hardware. Stability eliminates vibration-induced measurement drift during crosscuts.
3. Check the alignment: Use a straight edge to verify the blade is parallel to the fence. Adjust until the gap at front and back of the blade is equal before making any cuts.
4. Inspect the power supply: Verify the cord is intact and plug into a properly grounded outlet. The 1.5HP motor draws significant current — a dedicated 15A or 20A circuit prevents nuisance trips during heavy cuts.

Understanding The Different Components

Component	Description
Motor	1.5HP (33-830) or 2HP (33-990) enclosed motor with automatic blade brake.
Blade	10-inch, 5/8-inch arbor. Neutral or negative hook angle recommended for radial arm use.
Arm	Steel arm with radial movement. Positive detent stops at 0, 45, and 90 degrees for repeatable positioning.
Fence	Adjustable guide that determines cut width and parallelism. Keep aligned with the blade for straight results.
Table	27×44-inch work surface at 34-inch height. Keep the table surface clean to prevent workpiece slipping during cuts.

Maintenance And Safety Tips

• Regular cleaning: Remove sawdust from the table, guards, arm, and carriage after each session. Buildup in the carriage track increases bearing wear.
• Blade maintenance: Replace the blade when it requires noticeably more feed force for the same material. A dull blade on a radial arm saw increases kickback risk.
• Protective gear: Use safety glasses, hearing protection, and a dust mask. The Delta Model 10 produces a significant chip cloud during crosscuts.
• Secure workpieces: Hold the workpiece firmly against the fence before and during every cut. Never reach across the blade path during or after a crosscut until the blade has fully stopped.
• Disconnect when not in use: Unplug the saw when changing blades, adjusting guards, or when the shop is unoccupied.

Advanced Techniques And Tips

The Delta Model 10 radial arm saw handles a broader range of cuts than most stationary saws. Understanding each technique’s setup requirements prevents errors and protects the saw’s alignment over time.

Making Crosscuts And Miters

The Delta Model 10 excels at crosscuts and miters. For crosscuts, hold the workpiece firmly against the fence and pull the carriage toward you in a smooth, controlled motion. A stop block clamped to the fence table produces repeatable crosscut lengths without re-measuring each piece. For miters, dial in the required angle at the arm pivot, confirm the detent locks, and verify blade-to-fence alignment at the new angle before cutting production stock.

Creating Dado And Rabbet Joints

The radial arm saw creates dado and rabbet joints by making multiple passes at progressively adjusted depth settings. For dadoes, set the blade depth to the required groove depth and make the first outer cut, then work toward the center in successive passes. For rabbets, a single pass along the edge with the workpiece positioned against the fence produces a clean shoulder. The Delta Model 10’s positive depth lock holds the set position consistently across a run of identical pieces.

Compound Angles And Bevel Cuts

Compound cuts combine a bevel tilt with a miter swing. Set the bevel angle first, lock it, then dial in the miter angle. Test the setup on scrap before committing to finished material, since compound angle math can produce unexpected geometry if either setting is even slightly off. The Delta Model 10’s positive stops at 45 degrees in both axes simplify the most common compound angle configurations seen in picture frames and corner molding.

Mastering Rip Cuts

Rip cuts on a radial arm saw require the arm to be positioned parallel to the fence with the carriage locked. Position the fence to the desired cut width, ensure the anti-kickback fingers are in place and properly tensioned, and feed the workpiece from the anti-kickback side. Use a push stick for the last 6 inches of feed to keep hands clear of the blade. The Delta Model 10’s 26-1/2-inch out-rip capacity handles most dimensional lumber without extension tables.

Comparison With Other Radial Arm Saws

The Delta Model 10 competes in the vintage and used-tool market against similarly aged DeWalt, Craftsman, and Bosch radial arm saws. Each has different parts availability, community support, and power specs. Understanding these differences helps you choose the right used saw for your shop.

Delta Vs. Dewalt Radial Arm Saw

• Power: The Delta Model 10 at 1.5-2HP is competitive with similarly vintage DeWalt radial arm saws, which ranged from 1.5 to 3HP across their production years. DeWalt’s higher-horsepower models offer an advantage in rip-heavy workflows.
• Precision: The Delta Model 10’s cast-iron arm and positive detent system deliver consistent accuracy. DeWalt’s older models used a similar approach but with a heavier column that some woodworkers find more rigid under load.
• Parts availability: Both brands have dedicated communities and third-party parts suppliers. Delta parts for the 33-830/33-990 are generally easier to source than some older DeWalt configurations.

Delta Vs. Craftsman Radial Arm Saw

• Build quality: The Delta Model 10 uses cast-iron construction throughout its critical components. Craftsman radial arm saws of the same era often used more aluminum castings in the arm and yoke assembly, which affects long-term rigidity.
• Price: Used Craftsman radial arm saws typically sell for less than Delta units of the same age and condition, reflecting the Delta’s stronger collector and woodworker following.
• Community support: Delta’s Model 10 has significantly more documented tuning resources, forum discussions, and dedicated repair guides than most Craftsman equivalents.

Delta Vs. Bosch Radial Arm Saw

• Durability: Both brands built well-regarded radial arm saws for decades. The Delta Model 10’s oval-tube arm design is frequently cited in woodworking communities as having a better reputation for long-term accuracy than some Bosch tube configurations.
• Cutting capacity: The Delta Model 10’s 16-inch crosscut capacity at 1-inch depth matches or exceeds most vintage Bosch equivalents in the same horsepower range.
• Safety features: The Delta’s positive detents and electro-mechanical blade brake were ahead of many competitors when introduced. Verify that any used Bosch unit you compare against also has a functioning brake before comparing them head-to-head on safety.

Frequently Asked Questions

What are the model numbers for the Delta Model 10 radial arm saw?

The Delta Model 10 radial arm saw was produced under two primary model numbers: the 33-830 (1.5HP, base model) and the 33-990 (2HP, Deluxe version). Both use a 10-inch blade on a 5/8-inch arbor and share the same 27×44-inch table size and 16-inch crosscut capacity. When sourcing parts or a manual, use the model number stamped on the saw’s data plate.

What blade size does the Delta Model 10 radial arm saw take?

The Delta Model 10 uses a 10-inch blade with a 5/8-inch arbor bore. This is a standard size widely available today. For radial arm saw use, choose a blade with a neutral or negative hook angle (0-degree ATB or negative hook ATB) rather than a standard positive-hook blade, which can cause self-feeding on a radial arm saw and accelerate carriage bearing wear.

How much does a Delta Model 10 radial arm saw weigh?

The Delta Model 10 radial arm saw has a shipping weight of approximately 175 lbs for the base unit. The assembled saw (without packaging and shipping materials) typically weighs around 150 lbs. Plan for at least two people and appropriate moving equipment when relocating this saw — the cast-iron construction that makes it accurate also makes it heavy.

Is the Delta Model 10 radial arm saw worth buying used in 2026?

Yes — when the safety components are intact and the saw has been maintained. A Delta Model 10 with working arm detents, intact blade guard, present anti-kickback fingers, and smooth carriage travel is a capable workshop saw that can run for decades more. The main risk in buying used is missing safety parts that are difficult to source. Inspect those components first; if any are absent, negotiate the cost of sourcing replacements into the purchase price or walk away.

What is the crosscut capacity of the Delta Model 10 radial arm saw?

The Delta Model 10 radial arm saw has a 16-inch crosscut capacity at a 1-inch depth of cut. Maximum depth at 90 degrees is 2-3/4 inches, and at a 45-degree bevel it drops to 2-1/2 inches. This crosscut capacity is larger than most miter saws and makes the Delta Model 10 well-suited for wide-panel crosscuts on shelving, cabinet sides, and dimensional lumber.

Conclusion

The Delta Model 10 radial arm saw — built across the 1950s through 1970s as models 33-830 and 33-990 — remains a capable workshop tool when purchased in good condition. Its 16-inch crosscut capacity, cast-iron construction, and positive detent system give it advantages that many modern portable saws cannot match. Before buying used, prioritize the inspection points that matter most: blade guard, anti-kickback fingers, arm detents, and carriage travel. Those four checks separate a reliable shop tool from an expensive restoration project. Choose the right replacement blade with a neutral or negative hook angle, set up your mobile base to fit the 27×44-inch footprint, and this vintage saw can deliver decades more of accurate workshop service.

For related resources, see our guides on Delta radial arm saw parts sourcing, restoring an old radial arm saw, and what a radial arm saw is used for before deciding if this tool fits your workshop workflow.