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13

First of all, it isn't at all a definite fact that the murex trunculus is the correct fish for dying techeiles, or that the evidence is 'compelling' to everyone. There really is a good answer to this question, both in terms of archaeological evidence and halakhic literature regarding the identity of the chilazon. You ask, "let's say that Murex is not the ...


5

I don't know if they address this concern particularly in terms of the expense. However, the knowledge that murex indigo is chemically identical to plant-based indigo is something knowable only in the 20th and 21st century, when we know about atoms, molecules, and chemicals. If plant-based indigo failed the gemara's test for fastness, and this was just a ...


5

From http://tekhelet.com/tekhelet/ask-ptil-tekhelet/ Q. Who is the mashgiach on the process making sure it's lishma, etc.? Who gives the official hechsher? A. R. Eliyahu Tavger is the Rav of the Amuta. The workers doing the dyeing, spinning, twining of the threads are all yirei shamayim Jews who are very careful to state explicitly before every ...


2

Rav Hershel Schachter in this shuir at 29:30 says that some are afraid to wear techelis because of mechzei kyuhara,but he explains that is only talking about a middas chassidus not trying to fulfill a positive commandment. Whether one agrees with the idea of wearing techeiles or not if one wants to wear it the idea of mechzei kyuhara should not apply. The ...


2

This requirement is stated in the Tosefta and Meseches Tzitzith Tosefta Menachoth 9:16 "תכלת אין כשרה אלא מן החלזון הביא שלא מן החלזון פסולה." Tekheleth is only valid from the חלזון ; if one used a dye not made from the חלזון it is invalid.” מסכת ציצית פרק א הלכה י שאין צובעין תכלת אלא בחלזון. We only dye תכלת with a חלזון from: ...


2

How are the tzitzit made? One begins from the corner of a garment - i.e., the end of its woven portion. One ascends upward no more than three fingerbreadths from the edge, but no less than the distance from the knuckle of the thumb to its end. [A hole is made] and four strands inserted, [causing them] to be folded in half. Thus, there will be eight ...


1

The relevant statement is in his Pirush HaMishnayos 4:1: ואינו נמצא בידינו היום לפי שאין אנו יודעים לצובעו שאין כל מין תכלת בצמר נקרא תכלת אלא תכלת ידועה שאי אפשר לעשותה היום ועל כן אנו עושים בלבן לבדו And [Techeiles] is not found in our hands today because we do not know how to die it because not all types of Techeiles in wool are called Techeiles ...


1

According to הרב מאיר הלוי הלמן - לבוש הארון (modern English sefer on Techeiles), on page 21: The color of murex dye was commonly known as “Tyrian Purple”, as the city of Tyre (today in Lebanon) was the leading center for purple dye production. Murex dye had “great brilliance and fastness in comparison with other known dye”. These qualities, as ...


1

I have two hypotheses: 1) If a major rav were to come out with a clear psak in favor, or just start wearing techelet publicly himself, it would be a whole lot to carry on his shoulders. As far as I know, most poskim are hesitant to tackle the question at all. Even Rav Moshe Karp was staunchly opposed to wearing techelet, but when one of his sons came home ...



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