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ALL GUIDES

All Guides

Every guide on Woodwiki. Techniques, concepts, tool guides, references, projects, troubleshooting, and glossary entries.

234 guides

Showing 48 of 233 guides

POWER TOOLS·concept

Table Saw Blade Height: How High Should It Be?

Set your blade so gullets just clear the top of the wood, 1/8" to 1/4" above the surface. Why that measurement prevents burning, and when to break it.

Beginner15 min read
POWER TOOLS·concept

Using a Router: How It Works and 5 Key Variables

The complete mental model — anatomy, setup, edge profiles, joinery, and troubleshooting in one place.

A router profiles edges, follows templates, and cuts mortises — three things no other shop tool does. Master five variables to control every cut.

Beginner31 min read
WOOD & MATERIALS·concept

Wood Movement: Why Boards Swell and Shrink With the Seasons

Why a 12-inch oak board moves 1/4 inch between summer and winter, what species move most, and how to design for seasonal wood movement.

Beginner14 min read
POWER TOOLS·concept

What Is a Zero-Clearance Insert?

How It Eliminates Tearout on the Table Saw

A zero-clearance insert replaces your stock throat plate to stop tearout and dropped offcuts. Make one in 15 minutes or buy a Leecraft insert for $30.

Beginner18 min read
FINISHING·concept

What Does Boiled Linseed Oil Do?

What It Is, What It Does, and When Not to Use It

Boiled linseed oil isn't boiled, offers minimal protection, and its soaked rags can spontaneously combust. What it is, what it does, and when to use it.

Beginner27 min read
FINISHING·concept

What Is Butcher Block Oil?

Why Mineral Oil Works, What Vegetable Oils Do Wrong, and How Often to Reapply

Butcher block oil is food-grade mineral oil. Learn why it works, which oils destroy cutting boards, and how to build a maintenance routine.

Beginner24 min read
FINISHING·concept

Using Mineral Oil on your woodworking project

Food-Safe, Simple, and Effective

Mineral oil is the easiest food-safe finish for cutting boards. Learn which grade to buy, the FDA rules behind it, and how to apply and maintain it.

Beginner21 min read
FINISHING·concept

What is Pine Tar?

The Traditional Wood Preservative

Pine tar is a dark, penetrating wood preservative from heated pine. Learn where it works, how to apply it, and how it compares to modern finishes.

Beginner36 min read
FINISHING·concept

Oil-Based vs Water-Based Polyurethane: How to Choose

Color, Durability, Dry Time, and the Decision That Locks in Your Finish

Oil-based polyurethane ambers and goes harder; water-based stays clear and dries fast. Pick by color, durability, and timeline — matrix inside.

Beginner18 min read
FINISHING·concept

How Long Polyurethane Takes to Dry (and What Slows It)

Surface Dry, Recoat, Light Use, Full Cure — and the Variables That Push Each One Out

Oil-based: recoat in 8–24 hrs, full cure 30 days. Water-based: recoat 4–6 hrs, cure 14–21 days. Cold below 65°F doubles times. Humidity stalls oil cure.

Beginner12 min read
FINISHING·concept

What Is Polyurethane Wood Sealer?

Polyurethane seals wood by forming a hard plastic film. Understand oil-based vs. water-based, when to use it, and how to apply it right the first time.

Beginner17 min read
FINISHING·concept

What is Gorilla Wood Filler?

Gorilla Wood Filler is a water-based acrylic repair compound for nail holes and cracks. Here's when it works, when it doesn't, and what to use instead.

Beginner15 min read
FINISHING·concept

Can You Stain Over Stain?

When It Works, When to Use Gel Stain, and When to Strip

Yes, you can stain over stain if the surface is unsealed and you're going darker. Water bead test, gel stain method, and when stripping is the only answer.

Beginner26 min read
FINISHING·concept

How Does Ebonizing Wood Work?

The Chemistry, the Technique, and Which Woods Work Best

Ebonize wood with iron acetate. The tannin-iron reaction, which species work best, how to mix the solution, and how to fix gray or uneven results.

Beginner28 min read
FINISHING·concept

What Is Unicorn SPiT for Wood?

What It Is, When to Use It, and Why It Needs a Topcoat

Unicorn SPiT: a water-based pigment gel that works as stain, glaze, or paint by dilution. What it is, when to use it, and how to seal it for durability.

Beginner27 min read
HAND TOOLS·concept

What is 5/16 on a Measuring Tape?

5/16 on a tape measure is the 5th mark from any inch — shortest height, between 1/4 and 3/8. Read all tape fractions without counting every tick.

Beginner14 min read
JOINERY·concept

What Is a Miter Joint?

Why They Look Great, Why They Fail, and How to Fix Both

Miter joints hide end grain for clean corners but are structurally weak. Learn the geometry, cutting methods, reinforcement options, and troubleshooting.

Beginner41 min read
JOINERY·concept

What Is a Dovetail Joint?

Why They Work, When to Use Them, and How They Compare

Dovetail joints lock two boards with wedge-shaped tails and pins. Learn how they work, the five types, proportions, and when to choose another joint.

Beginner31 min read
JOINERY·concept

What are Mortise, Dovetail, and Mitre Joints?

The Three Joinery Families and How They Combine

Mortise, dovetail, and mitre joints each solve a different problem. Learn what each one resists and how the secret mitered dovetail combines all three.

Beginner20 min read
JOINERY·concept

What is a Mortise?

The rectangular socket half of the most durable joint in woodworking. What it is, how to size it, the three types, and where it shows up in furniture.

Beginner18 min read
POWER TOOLS·concept

What Is a Radial Arm Saw?

What It Is, Why It Disappeared, and Whether You Should Own One

The radial arm saw ruled American shops for decades. A 3.7-million-unit recall and the compound miter saw ended it. Here's what it still does.

Beginner29 min read
POWER TOOLS·concept

Jointer vs Planer

What Each Machine Does, Why You Need Both, and Which to Buy First

A jointer flattens. A planer thicknesses. Learn how each works, the milling sequence that connects them, and which to buy first.

Beginner44 min read
POWER TOOLS·concept

Can a Circular Saw Replace a Table Saw?

What Works, What Doesn't, and When to Just Buy the Saw

Can a circular saw replace a table saw? Guide-rail and inverted table methods compared, with an honest breakdown of what each can and can't do.

Beginner20 min read
POWER TOOLS·concept

What Is Table Saw Kickback?

Three Failure Modes, Four Fixes, and the Difference Between a Riving Knife and a Splitter

Table saw kickback launches wood at up to 120 mph — faster than you can react. Learn the 3 failure modes and 4 hardware fixes that prevent each.

Beginner19 min read
POWER TOOLS·concept

Table Saw vs Miter Saw: Which One Should You Buy First?

What Each Saw Cuts Best, Where They Overlap, and the One Project That Forces the Decision

A table saw rips boards to width and crosscuts with a sled; a miter saw chops to length and angles. The order to buy matters — here's how to decide.

Beginner21 min read
SHAPING & FORMING·concept

What is a Kerf Cut?

A kerf cut is the slot a saw blade removes. In kerf bending, a row of these cuts lets rigid wood curve around a radius without a steam box.

Beginner17 min read
WOOD & MATERIALS·concept

What is Outdoor Wood Glue?

Outdoor glue must survive rain, UV, and freeze-thaw. Type I PVA, polyurethane, or epoxy — which to use and why regular carpenter's glue fails outside.

Beginner18 min read
WOOD & MATERIALS·concept

Brad Nailer vs Finish Nailer

Which One You Actually Need and When to Use Each

Brad nailers shoot 18-gauge nails for light trim. Finish nailers shoot 15- or 16-gauge nails for baseboards and cabinetry. Here's how to choose.

Beginner22 min read
WOOD & MATERIALS·concept

Picking the right wood screws for your project

Gauge, Diameter, Pilot Holes, and How to Choose

#6 = 0.138", #8 = 0.164", #10 = 0.190". Wood screw gauge, pilot, and clearance specs, plus the 2/3 thread-penetration rule for picking length.

Beginner24 min read
WOOD & MATERIALS·concept

Why a 2x4 Isn't Actually 2x4

Why a 2x4 Isn't 2 Inches by 4 Inches

Nominal vs actual lumber dimensions for every common board size, plus the hardwood quarter system, plywood thickness, and how to avoid project mistakes.

Beginner18 min read
WOOD & MATERIALS·concept

15/32 Plywood: What It Is and When to Use It

The Half-Inch Confusion, CDX Grades, and When You Can Substitute

15/32 plywood measures 0.469"—1/32" under nominal 1/2". Learn what CDX means, how to read the grade stamp, and when to substitute.

Beginner24 min read
WOOD & MATERIALS·concept

What Is Half Inch Plywood?

Actual Thickness, Span Limits, and When to Use 3/4" Instead

Half inch plywood actually measures 15/32". Learn the real span limits, how it compares to 3/4", and which projects call for it versus when to step up.

Beginner21 min read
WOOD & MATERIALS·concept

How to Prime MDF Without Fiber Puffing

How to Seal and Prime MDF So Paint Actually Sticks

MDF absorbs paint like a sponge unless you prime it correctly. Which primer to use, how to handle the tricky edges, and how to avoid fiber puffing.

Beginner27 min read
WOOD & MATERIALS·concept

What Is MDF? Properties, Uses, and When to Choose It

The sheet good that takes paint better than anything else

MDF is wood fibers compressed into smooth, stable panels. Learn its properties, how it compares to plywood, when to use it, and how to finish it right.

Beginner29 min read
WOOD & MATERIALS·concept

How Hard Is Acacia Wood?

Janka Numbers, Full Species Comparison, and Which Projects It's Right For

Plantation acacia hits 1,430 lbf on the Janka scale — harder than red oak, close to hard maple. Full 14-species comparison table and use-case guide.

Beginner21 min read
WOOD & MATERIALS·concept

Acacia Wood Properties, Hardness, and Buying Guide

What You're Actually Buying, How It Works in the Shop, and When to Choose It

Acacia covers 1,300+ species — what you buy varies widely. Janka 1,430 lbf, harder than red oak. How it finishes, and how it compares to walnut.

Beginner31 min read
WOOD & MATERIALS·concept

What is Beech Lumber?

A Beginner-Friendly Hardwood Worth Knowing

Beech is a hardwood — Janka 1,300 lbf, harder than red oak. Learn its properties, wood movement caveat, best uses, and how to finish it without blotching.

Beginner28 min read
WOOD & MATERIALS·concept

Using Black Walnut for Cabinets

What It Costs, How It Works, and How to Get the Finish Right

Black walnut is North America's most prestigious cabinet wood. What it costs, how it moves, how to design around its challenges, and how to finish it.

Beginner28 min read
WOOD & MATERIALS·concept

Is Blue Pine Safe to Use?

Understanding Wood Stain Fungus (And Why It's Safe)

Blue pine is regular pine lumber with a blue-grey discoloration from a harmless fungus. It's structurally sound, non-toxic, and often priced at a discount.

Beginner21 min read
WOOD & MATERIALS·concept

Why Cherry Wood Darkens Over Time

What It Looks Like Fresh, What It Becomes, and Why "Dark Cherry" Isn't What You Think

Cherry starts pale pinkish-brown, not the deep reddish-brown you expect. Full color timeline, 'dark cherry' confusion, and comparison to walnut and maple.

Beginner28 min read
WOOD & MATERIALS·concept

What Is Curly Maple?

Figure, Properties, and How to Work with It

Curly maple is hard maple with wavy grain that shimmers in light. Learn what causes the figure, how to buy it, work without tear-out, and finish it.

Beginner32 min read
WOOD & MATERIALS·concept

Is Mango Wood Good for Furniture?

The Sustainable Tropical You Can Actually Afford

Mango wood guide: Janka hardness, workability, finishing tips, sustainability facts, and how it compares to teak, acacia, and walnut.

Beginner22 min read
WOOD & MATERIALS·concept

How Hard Is Maple Wood?

What the Number Means and Which Maple to Use

Hard maple rates 1,450 lbf on the Janka scale — one of the highest domestic hardwoods. Learn what the number means and when to choose hard vs. soft maple.

Beginner16 min read
WOOD & MATERIALS·concept

Staining Maple: Why It's Difficult and How to Get Even Color

Maple blotches because its tight, diffuse-porous grain absorbs stain unevenly. Here's the science behind it and the three approaches that actually work.

Beginner23 min read
WOOD & MATERIALS·concept

What is Oak Burl?

Oak burl is figured wood from an abnormal oak growth. Here's what it is, why the grain swirls the way it does, and how to work, dry, and source it.

Beginner25 min read
WOOD & MATERIALS·concept

Why Red Oak Stains Go Orange

Choosing Colors, Understanding Why It Works, and Getting It Right

Red oak stains beautifully when you understand its open pores and pink undertones. Best stain colors, Early American tips, and water popping steps.

Beginner22 min read
WOOD & MATERIALS·concept

What is Red Oak Wood?

Properties, Grain, Movement, Finishing, and When to Use It

Red oak is the most abundant domestic hardwood in the US. Here's what its open-grain structure means for staining, joinery, and project selection.

Beginner30 min read
WOOD & MATERIALS·concept

Is Rubberwood Good for Furniture?

What It Is, How It Works in the Shop, and When to Use It

Rubberwood is real hardwood at 960 Janka — softer than oak, harder than pine. Cheap because trees are felled at end-of-latex-life, not grown for timber.

Beginner28 min read