How to Make a Scratch Stock
Scratch stocks are super easy to make, and shouldn’t cost you a cent. They are typically just made from scraps in your workshop. The wooden “stock”, or handle is made from a scrap of wood found lying in your scrap bin. Cut a small kerf to hold the cutter, and bore 2-3 holes to add machine screws & nuts as a vise for the cutter. Cut & shape the notch in the stock in a manner that allows you to place your profile in the right spot on your furniture.
If you have rounded furniture pieces to scratch a profile onto you can shape your stock to accommodate a round shape:
The metal cutter can be fashioned from a thin scrap of sheet metal or old bandsaw blade. It doesn’t need to be tool steel. If using an old bandsaw blade, make sure to file the teeth off (enough to prevent yourself getting cut) and use the back side of the blade for your profile, where the metal isn’t hardened.
Filing is much easier in non-hardened steel. Use a marker or layout fluid to coat the area of the metal where you’ll be cutting the profile:
Then use an awl to scratch your desired profile into the metal.
Then use a series of metal files to cut the soft steel down to your scratched profile lines.
As you can see below, you can make multiple profiles on one piece of metal. This allows you to simply flip the cutter around when you need a different profile.
Insert the cutter into the stock so that it just projects enough to make the cut. Then tighten down the screws that you added to the stock.
On the scratch stock below you’ll notice that the square nuts were inlaid into the stock to prevent them from moving:
Scratch away until your profile takes shape! Like with molding planes, the scratch stock should stop cutting when you’ve reached the full profile:
Soon you’ll find a handful of custom-made scratch stocks scattered around your workshop. Comment at the bottom of the page to share your experience with making & using scratch stocks.