<p>I bought some heating block cotton to insulate the exposed surface of my hot end.  I thought the yellow as double-sticky but it appears to be Kapton.</p>

<p>What can I use to attach it to the extruder?</p>

<p><a href="https://i.stack.imgur.com/9FFOY.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9FFOY.jpg" alt="enter image description here"></a></p>

<p>My extruder is already covered on four sides.  I want to cover the other two.<a href="https://i.stack.imgur.com/VLyKX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VLyKX.png" alt="enter image description here"></a></p>

[{'answer_id': 4331, 'author': 'Ecnerwal', 'author_id': 6853, 'author_profile': 'https://3dprinting.stackexchange.com/users/6853', 'pm_score': 2, 'selected': False, 'text': '<p>Kapton tape would be the logical material. It\'s unfortunate that your vendor did not supply that as a separate item, rather than sticking it to the "cotton" (I\'m guessing not actually cotton, as things might get a bit scorching for cotton, so I\'m assuming some type of ceramic fiber or the like.)</p>\n'}, {'answer_id': 7031, 'author': 'MaybeLater', 'author_id': 13097, 'author_profile': 'https://3dprinting.stackexchange.com/users/13097', 'pm_score': 0, 'selected': False, 'text': '<p>Not quite the answer to the question but closely related, so I venture. I use ordinary wool thread to insulate the hot end. I just wrap it carefully so it is covered everywhere. Very low cost, very effective. Wool can handle even the hottest extrusion temperatures easily.</p>\n'}]
['https://3dprinting.stackexchange.com/questions/4326', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/6417/']