Why You Need a Marking Knife in Your MiniMax Workshop

Layout tools on workbench

When I was a boy, I learned a lot of what I know about woodworking from my dad. One thing I remember is that he always had a pencil tucked behind his ear. He was a handyman and did a lot of remodeling projects, constructed built-in cabinets, and had worked on some pretty unique projects in his time.

When I started woodworking, I always had a pencil nearby, usually in my shirt pocket. (I could never keep a pencil in place behind my ear. It was always falling out.) Anytime I needed to lay out joinery or mark a cut line, I used a pencil. This was back before inexpensive mechanical pencils became popular, so I had to learn to sharpen my pencil with my pocketknife. And I learned the trick of “twirling” or rotating the pencil as you draw a line so that the line would be a consistent thickness.

When bulk mechanical pencils became available at bargain prices, I switched to using those. I still use them and have dozens of them scattered in my shop. Yes, the leads can break easily but you learn how much pressure to apply when using them and a new point is just a click or two away.


Click here to download plans for these Shop-Made Marking Knives from WoodsmithPlans.com (affiliate link).

As my woodworking skills increased, I found that a pencil line wasn’t as accurate as I needed it to be at times. This was especially true for making tight-fitting joinery by hand. After all, no matter how sharp the pencil, it still has a width. So the question becomes, which side of the line is the “real” line or do you split the center of the line?

Then I read about marking knives. So I ordered one. My first knife was the Veritas Striking Knife. Yes, it’s a little pricey but I’ve had mine for decades and love it. It fits comfortably in my hand and is easy to keep razor-sharp. There are other, similar knives that perform just as well.

One advantage a knife has over a pencil is that it creates a scribed line that leaves no doubt about the location of the cut line. Another advantage, especially for marking across the grain, is that the knife severs the wood fibers. If you’re using a saw to cut to this line, there’s no tearout or chipping because the knife has already left a clean cut line.


Click here to download plans for these Shop Marking Knives from WoodsmithPlans.com (affiliate link).

If you want to step up the accuracy and craftsmanship of your woodworking, I highly recommend using a marking knife. During my tenure writing for Woodsmith and ShopNotes magazines, I had the pleasure of seeing the marking knives shown above come about. (Click here to download plans.) They’re great, heirloom-quality tools you’ll always want to have at hand.

Installing Electrical Receptacles in Your MiniMax Workshop

Outlets installed in wall

Receptacles installed in wall above workbench
Installing receptacles above worksurfaces in your MiniMax Workshop makes them easier to access.

As a follow-up to this previous post, once you have electricity supplying your workspace, it’s time to consider the placement of receptacles. There are a few considerations here. First, receptacles should be spaced close enough together to avoid using extension cords where possible. Secondly, consider the height above the floor for locating them. In your home, the standard height above the finished floor (AFF) for receptacles in the U.S. is 12″ (30cm). However, in your shop, figure that the average height of workbenches, table saws, and other worksurfaces averages out around 36″ (92cm). Most of the benchtop or portable hand tools that would be used in your shop will be on a workbench. Plus, floor space can quickly get crowded, often blocking lower receptacles.

For my MiniMax Workshop, I chose to install a two-gang receptacle box on every other stud in the walls. Since the stud spacing is 16″ (40cm) on-center, that makes a total of four receptacles located roughly every 32″ (81cm). For my way of thinking, it’s better to plan for more receptacles than you think you’ll need because you’ll, at some point, wish there was one closer to where you need it. Yes, I tend to go overboard on the number of receptacles, but I’ve never been sorry.

As for the height, I mounted all of the boxes 48″ (123cm) above the floor. This way, they would be easily accessible above worksurfaces and stationary power tools.

Here is my usual disclaimer. With anything involving electrical work, please consult with or hire a licensed electrician. If you’re running the cables yourself, they can advise on how the wire should be installed and fastened, what size wire to use, and how to make the connections. Also, cooperate with your local code officials and obtain the proper permits and inspections. It’s for your safety.

2-gang plastic electrical box with receptacles
Plastic electrical boxes will save you money but metal boxes are more durable.

I used inexpensive 2-gang electrical boxes that have a nailing flange on the front. I regret this decision. I found that the boxes can distort, making it difficult to fasten the receptacles and install the cover plate after the wall board is installed. And there’s always the possiblity that the plastic threads will strip. In the future, I’ll spend a little extra to buy metal boxes.

When it comes to running the wiring, I made another decision I sort of regret. Remember from this previous post that I ran two 20-amp circuits to the shop. My original thinking, and the way I wired it, was to dedicate one circuit to the recepactles on the north and west walls, and the other circuit to the east and south walls. The better solution would have been to run both circuits to each receptacle box. This way, each duplex receptacle in the two-gang box would be on a different circuit. This just helps even out the electrical load and prevent overloading in case you have power-hungry tools all along one wall. Again, this where your electrician can help you with how to do this per electrical code.

Another consideration, especially if your MiniMax Workshop is in a separate building, is whether to install outdoor receptacles. I took advantage of the open walls while I was running wires and poked through to the outside to install an outdoor-rated electrical receptacle box. I simply branched off the nearest receptacle box on the inside with the wiring. This outdoor receptacle has come in handy multiple times.

One of the things your electrician may mention to you is the use of Ground Fault Circuit Interrupters (GFCI) or residual-current device¬†(RCD in th U.K.) for the receptacles. In the U.S., they are required for circuits used outdoors, laundry rooms, bathrooms, basements, kitchens–anywhere there’s a potential for exposure to liquids. I could have used GFCI breakers at the main panel in the house. This would have protected both circuits going out to the MiniMax Workshop. But these can be pricey. Instead, I opted to install a GFCI receptacle at the start of each circuit then branched off to the other receptacles. This way, all of the receptacles downstream are protected.

After installing all of the boxes and wiring and making the final connections, it was time to flip on the breakers. This is always a sweat-inducing moment for me. But the worst that has ever happened to me is that I had a wire crossed somewhere and the breaker tripped immediately. If the breaker stays on, it’s a good sign your wiring is correct! To be sure, I checked each receptacle with a tester.

Testing the receptacles with a tester
Using a simple tester like this, you can verify that the wiring is correctly installed. A special GFCI tester is available that allows you to test that the GFCI operates correctly.

At this point, I called for my an electrical inspection as required by the local code officials. They looked at the breaker panel, the underground cable, and made sure I was using GFCI receptacles correctly. I passed the inspection which meant that I could insulate the walls and add the wall covering.

Adding Power to Your MiniMax Workshop

Electrical Power
Electrical Power
Photo by Pok Rie on Pexels.com

Unless you’re considering doing “unplugged” woodworking using only hand tools, you’re going to want some power in your shop. Even if it’s just for lighting, you need to consider how much power you’re going to need.

Let me stop right here and mention that I am not an electrician. I am comfortable installing breakers and running new circuits. However, I did consult with a licensed electrical contractor and the local code enforcement officials. You should do the same. They can tell you the requirements for cable size and type, breaker sizes, burial depth, and other important information. And certainly, if you feel uncomfortable installing wiring, receptacles, and circuit breakers, please–hire a professional.¬†

What I’m talking about below is the situation where you need to supply power to an outbuilding. If your MiniMax Workshop is in an attached garage or spare bedroom, simple talk to a licensed electrician about options for adding receptacles, if necessary.

Where electrical is required in an outbuilding, there are two solutions for supplying power. One solution is to branch off of the main breaker panel in the house and install a sub-panel in the workshop. This has the advantage of having only one higher-amperage breaker in the main panel to cut off power to the outbuilding when needed. Plus, you can install multiple circuits in the sub-panel inside the shop. This solution definitely requires the services and advice of your electrical contractor and code enforcement official to meet the necessary requirements for breaker sizes and quantity, cable size, and electrical grounding.

The second solution is to install separate breakers in the main breaker panel and run the appropriate sized cable to the workshop. This is the option I chose.

Main circuit breaker panel
Work with a licensed electrician to determine the size and quantity of breakers you need for your MiniMax Workshop.

For my MiniMax Workshop, I decided that I could get by with two 20-amp circuits. This would adequately supply the receptacles I wanted to install. Plus, I could branch off of one of those circuits for the lighting.

The problem was, my MiniMax Workshop shed is several feet away from the house. What would be the best method for running these two circuits to the shed? For my situation, the only workable solution was to run the cables underground that connected the breaker box in the house to the shed.

The first step was to apply for an electrical permit. This is required since I’m adding circuits to an existing panel. I had to specify that I was doing the work myself. In some areas, this is not allowed and a licensed electrical contractor must do the work or take responsibility for it.

The next thing you need to do is to call the utility service in your area to mark any underground cables and pipes. In my city, this is a requirement before starting any work that requires digging. The service I used painted the sod and placed flags to mark underground high-voltage wires.

Ground marked with paint and flags

With permit in hand, it was time to get to work.

To run wiring to an outside wall from the main panel, I had to fish cable up into the attic and over a laundry/utility room. The exterior walls of the house are masonry, so I opted to poke through the ceiling and run conduit down to a junction box that would connect to the outside. From there, I had to drill through concrete to connect to an exterior junction box. From the junction box to a narrow trench I dug, I used PVC conduit to protect the cable from weed trimmers and mowers.

PVC conduit connection
The box on the wall has a removable cover and connects to a junction box in the utility room inside the house. PVC conduit protects the cable that will be run to the MiniMax Workshop.

For my municipality, I had to dig a trench 18″ (45cm) deep between the house and the shed. The required depth where you live will likely be different.

When I reached the shop building, I again used conduit to run the cable up inside the wall. Then came the task of fishing the underground cable from the shed, along the trench, then up into the internal junction box in the laundry room. Inside, I completed the run using wiring rated for indoor use. Again, check with your code official and electrician for the proper cable to use outdoors and indoors.

Inspection tubes for buried electrical cable
Before covering the underground cable with soil, I installed temporary “view tubes” to allow the electrical inspector to verify the correct cable depth.

Before I covered the cable with soil, I installed “view tubes” or sections of pipe vertically in the trench that stuck above ground. These provided inspection ports for the electrical inspector to verify that the cable was buried at the proper depth. To prevent accidentally cutting into the cable in the future when digging, I also installed a yellow caution tape about 12″ (30cm) above the cable. This way, when a shovel hits the tape, it serves as a warning that there is a cable buried underneath.

Here’s where you may ask, “Why didn’t you run conduit the entire length of the trench?” Underground cable is very stiff and difficult to work with. I had enough trouble fishing it through the short lengths of conduit at the house and shed. The cable I used is rated for burial use without conduit, so it wasn’t an issue.

After this main cable was run, I connected it to the two new breakers in the main panel box. Then it was time to install receptacle boxes and wiring in the MiniMax Workshop. You can read more about that in another post.

Evaluating Your Potential Work Space – The Interior

MiniMax Workshop Exterior
The MiniMax Workshop

If your potential workspace for a woodworking shop is outdoors, you should have already evaluated the exterior of the workshop as I talked about here. Obviously, it has to be in a condition that protects the interior space. That’s what I want to address next. For me, this means taking a look at the inside of my 10′ x 16′ (3m x 5m) garden shed and deciding what changes I’ll need to make to turn the space into a usable workshop.

After the garden shed was (mostly) cleaned out, I spent a lot of time inside planning and daydreaming. This is the only space I have available to indulge my woodworking hobby, so the struggle is between practicality and the ultimate shop. Do I make do with what I have, doing the best I can with the shed as-is or do I take the time (and a little expense) to make the space more comfortable and enjoyable? You can probably guess that I decided to go with option number two. I figured if I’m going to be spending any amount of time out there, it might as well be a place where I can relax and be comfortable. After all, my past workshops also served as my “mental therapy.” I could go into “my space” and relax, be creative, or just sit and think.

As I mentioned before, my shed was built by Tuff Shed, so I didn’t have any questions about the quality of construction. They used traditional construction techniques with 2×4 studs spaced at 16″ center-to-center. A conventional roof system with plywood sheathing and asphalt shingles was more than adequate.

MiniMax Workshop Raw Interior
Any outdoor building should have adequate air flow to prevent moisture buildup that can lead to rotting of the wood framing and sheathing.

At the top of the gable end walls near the peak of the roof, a vent was cut into the wall. I can’t stress enough how important this is. I made the mistake once of building a shed without vents. It started to rot from the inside out in a matter of months. I had completely ignored the fact that there has to be adequate air exchange between the inside and outside of the structure. Moisture can build up on the inside surfaces of the ceiling and walls. If you’re building an enclosed structure outdoors or having one built for you, be sure to provide adequate ventilation for proper air flow between the interior and exterior.

Looking at the interior space, I had to make the decision whether or not to add insulation. I’m in the southeastern U.S. so heating is not as much as a concern as cooling. If you decide you’ll want to add heat or air conditioning (or both) to your shop space, it’s a good idea to add insulation.

But there’s another factor that pushed me in the direction of adding insulation: Noise. My shed is near the property lines of the neighbors. I wanted to minimize the noise impact when I’m using power tools, especially in the evening hours.

As you progress toward getting your workspace ready to move into, start giving some thought to the layout of your work area. What tools are you going to need and how will they be arranged? How much floor real estate will these tools require? What about worksurfaces like benches and worktables? I’ve already decided that I want to run a workbench along the end wall (10′ or 3m). That will provide plenty of workspace to get started as I figure out how and where the rest of my tools and accessories will be stored. All of this plays into where you will install electrical receptacles later on. And you need to account for door openings and windows in the placement of equipment in your shop.

Get a sketchpad with grid lines and start sketching up possible ideas for your shop layout. Or do what I did–use SketchUp to create a 3D layout of your shop. You’ll appreciate it later.

MiniMax Workshop SketchUp Layout
Using a 3D modeling program like SketchUp can help you visualize how best to lay out the equipment in your shop.