Guide: Lumber Prep for Woodworkers - Jointer, Planer, Alternatives.

Analysis of User Need: The user, an intermediate woodworker, is struggling with getting their lumber flat, square, and of consistent thickness (S4S) for projects that involve expensive lumber and panel glue-ups. They're unsure if they should invest in specialized tools like jointers and planers or if they can get by with alternative methods, such as using table saw jigs for edge jointing or cauls for flattening panels during glue-up. The main issue is figuring out the best way to prepare lumber, taking into account cost, effectiveness, and the types of imperfections in wood (like cupping and warping) they might run into.

Product/Service Opportunity: There's a clear need for a comprehensive resource that guides intermediate woodworkers through the complexities of achieving S4S lumber. This resource would help them decide whether to invest in tools like jointers and planers, or if alternative techniques and jigs are enough for their needs.

Specific Product Suggestion: An in-depth information resource, such as an online course, a detailed eBook, or a dedicated website section, focusing on "Achieving S4S Lumber for Home Woodworkers."

Content would cover:

  1. Understanding S4S Lumber: Defining S4S, S2S, etc., and explaining why it's crucial for quality woodworking, especially for panel glue-ups and precision joinery.
  2. Tool Deep Dive: Jointers & Planers:
    • How each tool works and their specific roles in the S4S process.
    • Pros and cons of owning them (cost, space, learning curve).
    • Guidance on selecting appropriate models (benchtop vs. floor, size, features) for a home shop.
  3. Alternative Techniques & Jigs:
    • Planer-Only Methods: Using planer sleds to flatten one face of a board (effectively replacing a jointer for face jointing).
    • Table Saw Methods: Techniques and jigs for edge jointing.
    • Hand Tool Methods: Using hand planes (jointer, jack, smoothing planes) to achieve S4S.
    • Router Methods: Using router sleds for flattening wider boards or slabs.
    • Cauls: Effective use of cauls for flattening panels during glue-ups when lumber isn't perfectly S4S.
  4. Cost-Benefit Analysis: Comparing the costs (monetary, time, space) and benefits (precision, speed, material yield) of each approach (dedicated machines vs. alternatives).
  5. Decision-Making Framework: Helping woodworkers assess their specific needs (project types, volume of work, budget, available space) to choose the most suitable method or tool investment.
  6. Troubleshooting: Addressing common issues like dealing with heavily warped or cupped lumber, and specific challenges with certain wood species (e.g., walnut mentioned by the user).
  7. Sourcing Lumber: Discussing the pros and cons of buying rough lumber vs. pre-milled S2S or S4S lumber.

Expected Benefits:

  • Informed Decision-Making: Empowers woodworkers to make educated choices about investing in expensive tools versus utilizing more budget-friendly or space-saving techniques.
  • Improved Project Quality: Better understanding of lumber preparation leads to flatter panels, tighter joints, and overall higher quality finished projects.
  • Cost Savings: Helps users avoid unnecessary tool purchases or reduce material waste by correctly preparing lumber.
  • Skill Enhancement: Provides knowledge and techniques for various methods of lumber preparation, broadening the woodworker's skillset.
  • Reduced Frustration: Clear guidance can alleviate the uncertainty and frustration associated with milling lumber, especially for those new to this aspect of woodworking.

Origin Reddit Post

r/beginnerwoodworking

Do I need a jointer or planer? Also s2s/s4s lumber questions.

Posted by u/King_Hawking06/05/2025
I'm starting to get into my first intermediate woodworking projects using expensive lumber, gluing up panels, etc. and I'm trying to parse out what tools I need to get. What I know is what a

Top Comments

u/space_ushi_boi
Walnut has a lot of grain going in different directions so there will be some cupping and warping in many boards. Also, since there is such high demand for walnut nowadays it is often churned
u/King_Hawking
In which case I would need to face joint and then plane right? So I would need both a jointer and a planer? Or could I get away with just using cauls on my glue up?
u/Glizzy_Gobbler699
Yeah it should be the same thickness but might be some warping
u/King_Hawking
I guess for my upcoming projects, the way I see my issue is that I can edge joint with my table saw, and I can work with boards that aren’t exactly the thickness I want. What I don’t have th
u/westercoast
There’s always workaround / alternative for almost every step in woodworking. And there’s almost always a tool that will do the job best or better than what you have. I think you need to work
u/belsaurn
Table saw doesn’t do as good of a job as a jointer. If you have a jointer, even 6”, you can face joint one side, then use that side to edge joint one side. Table saw to make the edges paralle
u/King_Hawking
My plan was just to edge joint with a table saw jig since I’ll only be doing 42” long boards. Do you thinking using cauls for my panel glue up is enough to get my surface flat?

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