פירוש על כלים 6:1

העושה שלשה פטפוטים – three legs/,pins that sit/rest on the land.

Introduction Today's mishnah deals with the purity of makeshift stoves.

וחיברן בטיט – above their head, like a kind of iron vessel that they call TRIPID.

If he put three props into the ground and joined them [to the ground] with clay so that a pot could be set on them, [the structure] is susceptible to impurity. The props used to make this stove are of earthenware. If he set three of them together so that he could rest a stove on top of them and attached them to the ground with clay, the structure is susceptible to impurity.

קבע שלשה מסמרים – that he inserted them into the ground.

If he set three nails in the ground so that a pot could be set on them, even though a place was made on the top for the pot to rest, [the structure] is not susceptible to impurity. The nails are made of metal and metal that is attached to the ground is not susceptible to impurity. Therefore this structure remains pure even if he makes a place on top out of earthenware for a pot to sit on. The fact that it is covered with some earthenware does not affect its status.

טהורות – for metal vessels that are attached to the ground are like the ground itself, and they are not susceptible to receive [ritual] defilement.

One who made a stove of two stones, joining them [to the ground] with clay: It is susceptible to impurity. Rabbi Judah says that it is not susceptible to impurity, unless a third stone is added or [the structure] is placed near a wall. According to the first opinion, since the stones are wide enough to support the pot, once they are attached with clay to the ground they are considered a stove and they are susceptible to impurity. However, Rabbi Judah retains the rule that we need a tri-partite structure in order to be susceptible to impurity. Therefore, he must either add a third stone or put the structure next to the wall to serve as a third stone.

וחיברם בטיט טמאה – it is like a portable stove on feet with caves for two pots/כירה of earthenware, that the plaster/clay on their head makes it the designation of earthenware.

If one stone was joined with clay and the other was not joined with clay, [the structure] is not susceptible to impurity. According to the sages both stones must be attached to the ground for it to be susceptible to impurity. If one was attached to the ground with clay and the other was not, the structure is not susceptible.

עד שיעשה שלישית – similar to three clay pins forming a sort of tripod for the support of a pot.

או עד שיסמוך לכותל – that the wall will sort the pot from one side.

אחת בטיט – one is fastened/attached to its neighbor with plaster/clay at its top.

ואחת שלא בטיט – that the third one is not attached/fastened. And this is [the opinion of] Rabbi Yehuda, but the Halakha is not according to Rabbi Yehuda.