Split Decisions: Fixing Wood and Refining Designs

Cason t -

Hello everyone and welcome back!

Since my last post, I had the chance to work with my new saw and some fresh pieces of wood. As expected, the smaller frame has proven to be more challenging, with a recurring issue of the wood splitting. Before I delve into that, let me share my experience working on it.

First, I spent more time on the cutting process to ensure every cut was precise. I also made a point of not cutting too close to the markings, since the width of the saw itself needs to be accounted for. On my initial attempts, I left too much excess wood, which led to a lot of extra sanding. However, as I practiced, I got better at making accurate cuts, which meant less sanding. Things were going great—my cuts were on point, and everything was sanded well—but when I assembled the frame, two of the sides split.

Split 1
When inserting the tail between the pins, its size was too large, functioning as a wedge and splitting the wood.
Worse Split
This was the worse split of the two

Dovetails are supposed to fit tightly to avoid falling apart, but it seems I made the joints too tight, which caused the splitting. One piece didn’t split too badly, but the other split quite significantly. I’ll need to redo those two parts of the frame and make sure to take extra time sanding everything to fit like a glove. Another thing is that when it is too tight, the pins can push the tail out, which is why those dovetails are not uniform.

Speaking of gloves, I should’ve worn them from the start, but I forgot to—a silly mistake on my part! While working on the first dovetail, I had too much force on the saw and accidentally pulled it back into the hand holding the wood. The cut was minor, but it served as a good reminder to always wear gloves when handling the saw. Anyways here is what the final frame of the board will look like:

frame

After repairing the split parts of the frame, the next step will be to create something to hold all the blocks of the board. I’m not entirely sure what I’ll use yet, but my faculty advisor suggested using a sheet of wood with legs attached to the bottom for support. So far, their suggestion seems to be the best option. Design-wise, this part of the board has been the most challenging so far. Placing a sheet to hold the blocks wouldn’t look ideal, as the difference in the wood would be visible at the bottom. I’ll continue brainstorming and researching potential methods to achieve a design that I find appealing.

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Comments:

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    danielle_l
    Hi, Cason! I'm glad to see that you're still tackling the dovetail joints well despite the challenges you're facing. I'm sure it will definitely pay off in the end! Glad that you're safe after that minor injury as well. Around how many attempts did it take you to achieve the ideal cuts of the wood for the dovetails? I hope you find a great solution for the blocks soon as well!
    allison_h
    Hey Cason! I'm glad the new saw is working well for you and it's great to see you adapt and form new ideas every time you face a challenge. Do you know if certain types of wood have a higher/lower likelihood of splitting compared to others?
    katherine_v
    Hello, Cason! The intricacies of the dovetail joint seem to be causing you a lot of trouble, but I am sure that with more practice, you will be able to master the art of making them. Also, I am relieved to hear that your injury was minor. What did you do with the pieces that ended up splitting? Is there a way to save them or repurpose them so the material is not wasted?
    nick_a
    Hello Cason! It's great to hear that you are constantly trying to find new ways to adjust to the challenges that you're encountering while making the frame of the board. Despite the challenges, was there something you were particularly proud of when working on the dovetail joints?
    meggiles
    Wear gloves!!!!! (From your squeamish Senior Project Advisor.) Can you give us an update on what's happening at your site? Love to know more!
    Dawn Ventura
    Cason, so glad your injury was minor. It is through life experience that we learn the most! I wonder if there is any info out there for making smaller dove tails? Could the technique be slightly different for smaller joints to prevent cracking?
    cason_t
    Hi Danielle! Achieving the ideal cuts for the dovetails took about six attempts across the four pieces, mainly due to issues with wood splitting. To avoid mistakes in cutting, I initially cut slightly less than needed and then spent quite a bit of time sanding everything down to ensure a perfect fit. Thanks so much for your comment!
    cason_t
    Hey Allison! Different wood types definitely vary in their likelihood of splitting. This largely depends on factors like density and grain structure. Hardwoods, which are typically denser, are generally harder to split compared to less dense softwoods. Grain structure also plays a big role—wood with interlocked grains is more resistant to splitting because the fibers run in different directions. There are a few other factors as well, but those are the main ones. Thank you for your question!
    cason_t
    Hello Kathy! The pieces that split during the process have been replaced, but I’ve decided to hold onto them for now. The damage isn’t too severe, so I may find a way to use them for a future project. One idea I considered was repurposing them as blocks in the board; unfortunately, they’re not large enough to match the required dimensions. Still, I’m committed to ensuring the wood doesn’t go to waste. Thank you for your thoughtful comment!
    cason_t
    Hello Nick! I think the proudest moment of any project is when everything finally comes together. Personally, I felt more of a sense of relief that it all worked, but I suppose that relief was what I was proudest of. One thing I found surprisingly enjoyable was the sanding. While the process itself wasn’t exactly fun, it didn’t demand my full attention, which gave me the chance to enjoy the scenery or even watch some videos while I worked. Thank you for your question!
    cason_t
    Hello Ms. Giles! Thank you for your concern. I shared an update about my site placement in my latest blog post, but to summarize: instead of simply observing, I’ll now be actively creating the pieces alongside my site advisor.
    cason_t
    Hi Ms. Ventura! Thank you as well for your concern. Overall, I believe the technique remains the same, but it requires much more caution and extra time. Taking the additional time to sand everything was, I think, the most significant improvement I made.

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