Craftsman 113225933 disc sander Parts

To use a Craftsman disc sander model 113225933, we keep the workpiece flat on the table, start the sander, then guide the material into the sanding disc with light, steady pressure. Let the abrasive do the cutting; we control the angle and contact, not the force.

• Unplug the sander before changing discs, adjusting the table, or checking guards.
• Wear eye protection and a dust mask; sanding dust is fine and fast-moving.
• Use dust collection if your setup supports it; keep the area clear of sawdust piles.
• Confirm the sanding disc is firmly attached and not torn, bubbled, or loose.
• Set the table square (or to your target bevel) and tighten all knobs.

1. Mark the surface with pencil lines so we can see progress.
2. Start the sander and let it reach full speed.
3. Hold the workpiece with both hands and keep it supported on the table.
4. Feed the work into the disc gently, using smooth back-and-forth motion to avoid grooves.
5. Lift off the disc to check fit often; stop when the marks disappear evenly.

• Pushing hard (causes burning, glazing, and uneven sanding).
• Holding the work in one spot (creates dips and flat spots).
• Sanding tiny parts freehand (use a jig, clamp, or a larger carrier board).
• Ignoring heat (if it feels hot, back off and let it cool).

Disc sanders remove material quickly; good technique prevents out-of-square edges, gouges, and overheated wood or plastic. Light pressure and constant movement give the straightest, cleanest results.

For tool and safety basics that apply to most DIY repairs and setups, we recommend reviewing are diy appliance repairs safe.

Last updated: February 2026

To replace the sanding belt on your Craftsman 113225933 belt and disc sander, unplug the tool, loosen the belt tension using the two tension-adjusting screws (with 1/2-inch wrenches), slip the old belt off the drums, install the new belt, then re-tension evenly so the belt runs straight.

• Unplug the sander before removing covers or touching the belt
• Remove workpieces and clear the table area
• Keep fingers clear of pinch points at the drums
• Do a short test run after reassembly
• Stop immediately if the belt tries to climb off a drum

1. Disconnect power and place the sander on a stable surface.
2. Access the belt area by removing any belt guard/cover that blocks the belt path.
3. Loosen belt tension:
   • Use two 1/2-inch wrenches on the tension-adjusting screws.
   • Back the screws off evenly to relieve tension.
4. Remove the old belt by sliding it off the front and rear drums.
5. Install the new belt over both drums, keeping it centered by hand.
6. Re-tension the belt:
   • Pull the wrenches toward you (to stretch/tighten) and tighten both adjusting screws.
   • Tighten evenly so the belt stays aligned.
7. Test run briefly and recheck alignment and tension; adjust both screws in small, equal changes if the belt drifts.

Correct, even tension keeps the belt running straight on the drums, reduces vibration, and prevents premature belt wear on your Craftsman 113225933.

For general electrical troubleshooting on power tools (if the motor will not run after reassembly), use our how to use a multimeter to test electrical parts video.

Last updated: February 2026

Yes; a 4x36 belt sander works for knife making, but it is best for profiling, handle shaping, and light bevel work because belt speed, platen size, and power limit heavy stock removal compared with a 2x72 grinder. On Craftsman model 113225933, you are working with a larger belt-and-disc setup than a 4x36, so it removes material faster and tracks more steadily.

A 4x36 is a common entry-level size; the 113225933 is a belt-and-disc sander with a larger belt, which changes performance.

• 4x36 belt sander: slower grinding, shorter belt heats up sooner, smaller platen area
• Craftsman 113225933: larger belt runs cooler and lasts longer per belt, better for flattening and controlled grinding
• 2x72 grinder: fastest stock removal, best control for long, even bevels, widest belt selection

Using the right abrasive matters more than pushing harder.

• Use ceramic or zirconia belts for steel; they cut faster and cooler than aluminum oxide
• Start coarse for shaping (36 to 60 grit), then refine (80 to 120), then prep for hand sanding (220 to 400)
• Change belts as soon as cutting slows; dull belts create heat and waste time

• Quench often in water to control heat, especially near the edge
• Use steady, moderate pressure; forcing the grind overheats steel and loads the belt
• Keep the platen and disc face clean and flat; grooves and buildup telegraph into the bevel
• Grind with good lighting and a consistent reference (scribe line or layout dye) for symmetry

Knife grinding is mostly heat control and repeatability. A 4x36 can make good knives, but a larger belt sander like the Craftsman 113225933 gives you more belt life, cooler grinding, and better control for shaping and bevel work.

For general power-tool repair safety practices, use are diy appliance repairs safe.

Last updated: February 2026

For the Craftsman disc sander model 113225933, “best wattage” is the amount of input power your outlet and cord can supply without starving the motor. Most bench disc sanders in this class run about 700 to 1,200 watts input; size your setup based on the amps listed on your sander’s nameplate.

Use the motor label first; it tells you what the tool actually draws under rated load.

• Check the nameplate amps (A) on your 113225933 sander
• Estimate input watts with watts = volts × amps (typical shop outlets are 120 V)
• Plan extra capacity for startup surge and heavy sanding pressure
• If the disc slows easily, use lighter pressure and a coarser grit instead of forcing the cut
• Avoid running the sander on the same circuit as a shop vac, heater, or compressor

Voltage drop reduces torque, which makes a sander feel “weak” even when the motor is fine.

• Keep cords as short as possible
• Use 14 AWG for short runs; use 12 AWG for longer runs or higher amps
• If the cord or plug gets warm, switch to a heavier gauge

Supplying the wattage your 113225933 actually needs keeps disc speed steadier, improves sanding results, and reduces nuisance breaker trips and motor overheating.

For safely checking voltage and current, use how to use a multimeter to test electrical parts video.

Last updated: February 2026