The prohibition of Tikkun Keli applies on Yom Tov, just as it applies on Shabbos. Thus all items forbidden to be cut on Shabbos due to Tikkun Keli may not be cut on Yom Tov. This applies even by food related matters.

Fixing a skewer:[1] Fixing a skewer to use for roasting [i.e. straightening or sharpening] is Biblically forbidden due to Machshirei Ochel Nefesh.^[2] This however only applies if one could have fixed the skewer before Yom Tov, or could have made or purchased a new one. If however one could not fix it before Yom Tov, such as if it broke on Yom Tov, or even if it broke before Yom Tov, but for an important reason completely beyond his control he could not fix it before Yom Tov, then he may fix it on Yom Tov. (If, however, it could have been fixed some time before Erev Yom Tov, and he delayed it until Erev Yom Tov, and due to uncontrollable reasons, he did not have the time to fix it, then it is forbidden to be done on Yom Tov.)

Sharpening a knife:[3] It is forbidden to sharpen a knife on Yom Tov. This applies even if one could not fix it before Yom Tov, such as if it broke on Yom Tov, or even if it broke before Yom Tov.

Puncturing holes:[4] It is forbidden to puncture holes in vessels on Yom Tov, just as on Shabbos. This applies even if one desires to do so for the sake of food, being that one could have punctured the hole before Yom Tov. If, however, one was unable to puncture a hole in the vessel before Yom Tov, then it is permitted to make the hole on Yom Tov [if one is doing so for the sake of eating].[5] Nonetheless, we do not rule this way to the public [and rather tell them that it is forbidden to make a hole even in such a case].[6]

Opening cans: See Halacha 6!

Based on the above prohibition of Tikkun Keli, it is forbidden to cut or tear the following items on Yom Tov, and they are all to be prepared, and pre-cut, before Yom Tov:^[7]

• Tablecloth: It is forbidden to cut a tablecloth roll for the sake of using the cut piece to cover one’s table [or other usage]. This applies irrelevant of whether one cuts the tablecloth on the pre-serrated lines. It is forbidden to do so even with one’s hands, and certainly with a knife.
• Garbage bags: It is forbidden to cut a garbage bag from a garbage bag roll on Yom Tov.
• Plastic sandwich bags: A pack of sandwich bags in which each bag is slightly attached to the bag under it, and needs to be torn off, is forbidden to be torn on Yom Tov. This applies irrelevant of whether one cuts the bags on the pre-serrated lines.
• Tinfoil: It is forbidden to cut a piece of tinfoil from a roll, on Yom Tov, whether with one’s hands or using a knife.
• Paper towel: It is forbidden to cut a piece of paper towel from a roll, on Yom Tov, whether with one’s hands or using a knife. This applies irrelevant of whether one cuts the paper towel on the pre-serrated lines.
• Toilet paper: It is forbidden to cut a piece of toilet paper from a roll, on Yom Tov, whether with one’s hands or using a knife. This applies irrelevant of whether one cuts the toilet paper on the pre-serrated lines.
• Tissues: A pack of tissues in which each tissue is slightly attached to the tissue below it, and needs to be torn off, is forbidden to be used on Yom Tov. This applies irrelevant of whether one cuts the tissues on the pre-serrated lines.

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[1] Admur 495:4 and 509:3

[2] The reason: As one’s body does not benefit from the actual skewer, but rather from the roast that the skewer helped cook. [Admur ibid]

[3] Admur 509:4

[4] Admur 509:14 “Just as one may not puncture a new hole in a barrel on Shabbos due to the reason explained in 314:3, so too one may not puncture a hole on Yom Tov”; Michaber 509:6; Shut Rosh 23:1

[5] Admur ibid; M”A 509:13

[6] The reason: As this follows the same law as all Machshireiy Ochel Nefesh that could not be done before Yom Tov, of which we rule that one is not to rule to the public like the leniency. [Admur ibid; See Admur 509:2]

[7] Piskeiy Teshuvos 340:34; See Admur 340:17 “Cutting items detached [from the ground]…if through doing so one fixes the item to be used for a certain use, then he is liable for [the] “fixing a vessel” [prohibition] if he cut it using a knife as was explained in chapter 322 [Michaber Halacha 4] regarding the cutting of a twig. Due to this [prohibition of Tikkun Keli] one may not break earthenware and may not tear paper which is permitted to move [i.e. is not Muktzah] in order to use the [torn or broken piece] for a use due to that doing so is similar to him fixing a vessel. See Chapter 508 [Halacha 2]”; Admur 508:2 “One who roasts fish over a grill is not to cut a piece of paper in order to soak it in water and then place it under the fish over the grill in order to prevent the fish from burning. Similarly, one may not break a piece of earthenware in order to place it under the fish. Similarly, one may not break open a cane in order to place its sheath under the fish. As well, one may not break open the cane to make it into a figure like skewer to roast with. The reason for all the above restrictions is because in all cases that one makes and fixes an item to be fit for a use, then it is like he has fixed a vessel on Yom Tov.”; Admur 308:54 “A [detached] vine……is forbidden to use it to draw with, unless the vine was tied to the bucket from before Shabbos due to a decree that perhaps the vine will be too long for him, and one will cut it, being that it is soft and easy to be cut, and will thus end up [transgressing the prohibition of] fixing a vessel on Shabbos.”; Admur 308:55 “It is forbidden to remove a reed from a broom which is used to clean the house, being that through removing it he is fixing it for the use that he wishes to use it for, which is for hitting the children with, and [the law is that] any item that one fixes to be used for any use is included in the prohibition of fixing vessels.”; Admur 308:82 “A vessel which has become damaged [and is thus no longer in use] one may not detach from it a piece of earthenware to use to cover something with or to place something on, being that doing so is like making a vessel, as any item which one fixes on Shabbos for it to be useable for any use transgresses the prohibition of “Tikun Keli” [making a vessel on Shabbos].”; Admur 514:18 “Two vessels which were attached to each other from the beginning of their manufacturing, as is commonly done with two cups or two candles, that they are commonly manufactured attached to each other, it is forbidden to separate them into two parts on Yom Tov [or Shabbos] due to the prohibition of Tikkun Keli.”; Admur 514:19 “A long wick which one desires to shorten, may not be shortened on Yom Tov weather with a vessel, or with a flame or with one’s hands, due to the prohibition of Tikkun Keli, as he is making a long wick into a short wick. Likewise, if you want to turn into two lakes it is forbidden to cut it.; Michaber 322:4 “However, a twig which is not animal food, even to take it in order to pick at his teeth is forbidden”; Vetzaruch Iyun as to why there is no Tikkun Keli prohibition involved in cutting a block of wood into fire wood on Yom Tov [see Admur 501:1-3]

Other opinions-See regarding the debate surrounding the prohibition of cutting toilet paper or cotton balls: Stringent: Tzur Yaakov 152; Chelkas Yaakov 3:123;  Minchas Yitzchak 4:45; Az Nidbaru 2:31; SSH”K 23:16; Or Letziyon 2 41:6; Mishneh Halachos 6:84; Minchas Shlomo 2:12; Orchos Shabbos 11:20-21 and footnotes 31-32; Piskeiy Teshuvos 340:28; Theoretically are lenient [but many nonetheless conclude to be stringent]: Maharam Brisk 3:35; Mishpitei Uziel 8; Tzitz Eliezer 13:45; Rav Shlomo Zalman Aurbauch in SSH”K 35 footnote 4; Yalkut Yosef 12 [Shabbos 5 p. 146] 340:1; Taharas Habayis 2 p. 342; Yabia Omer 9:108-185; Shemesh Umagen 1:4; Shaar Shimon Echad 1:8; Shaar Shimshon 147; Mikveh Hamayim 2:7; Hillel Omer 199; Menuchas Ahavah 16:9-10 and footnotes 25 and 29 and 33; See Rav SZ”A brought in Orchos Shabbos 11 footnote 31

Does the Koreiah prohibition apply in the cases listed below? The Koreiah prohibition only applies if the item is made of several fabrics or pieces which are being torn apart. Accordingly, the Koreiah prohibition would not apply in the cases listed below in which the item is a single solid material. [See Admur 340:17] However, Tzaruch Iyun, as perhaps the beads of plastic which are melted to form the plastic sheet would be considered “several fabrics” which would transgress the Koreia prohibition. Likewise, paper which is made from ground wood may also be defined as “several fabrics” and transgress the prohibition. [See Piskeiy Teshuvos]

Does the Biblical Tikkun Keli prohibition apply in the cases below? As stated above, if one cuts the item with a scissor or knife, it is a Biblical prohibition, while if he tears it with his hand, it is a Rabbinical prohibition. This is unlike Piskeiy Teshuvos 340:34 footnote 308 who writes that according to Admur there is no Biblical prohibition, as in truth, while there is no Biblical prohibition of Koreia according to Admur, there is a Biblical prohibition of Tikkun Keli if cut with a vessel. However, see there based on Maor Hashannos 4 that the Biblical prohibition of Tikkun Keli does not apply being that the vessel is able to be used in a time of need even without cutting and thus the simple act of cutting is not considered a complete fixing. However, in the case of the garbage bags or plastic bags, since the cutting turns it into a useable bag, then it is a Biblical prohibition of Tikkun Keli [if done with a vessel]. The practical ramification is regarding Amira Lenachri and if we can consider it Shevus Deshvus to cut it even with a knife.

Does the Michateich prohibition apply in the cases below? For the most part, the Michateich prohibition does not apply in the below mentioned cases even if one cuts it by the dotted lines as one has no intent to truly cut it to a specific measurement. [See Admur 314:16; Piskeiy Teshuvos 340:34 footnote 308] However, see Aruch Hashulchan 321:40 and Az Nidbaru 1:79 who rules that one who tears paper for a use transgresses Michateich. Vetzaruch Iyun.