To cut into the oven from the side, Mark used a sheetrock knife to remove the horsehair plaster. When disturbing old plaster, it’s important to protect against lead. In this case, Mark used a P100 mask and safety glasses, which can be found at any home center, and a 9 gallon dust extractor HEPA vacuum with automatic cleaning, which is manufactured by Bosch Tools. Once the horsehair plaster was removed, the rest of the work happened with a variety of masonry hand tools, including a brick hammer and chisels. These can all be found at home centers. To repair the oven, Mark laid a base of Type N mortar, which is manufactured by Quikrete. For the replacement bricks, Mark chose Boston City Hall pavers, which are manufactured by the Stiles and Hart Brick Company. Normally, he would choose a fire rated brick for an application receiving this much heat, but because it was a restoration project, he felt that these bricks best matched the oven and still had a high heat resistance. Expert assistance with this segment was provided by Old Sturbridge Village.