Talk:Sandpaper

message: The grit size table seems to come directly from here and is not cited in the article.  —Preceding unsigned comment added by 140.247.232.78 (talk) 16:49, 8 July 2008 (UTC)
replies: text: Historically grit sizes were based on wire screen sizes, so the number might easily translate into the number of wires over a length or area. However the size of the grit that can pass through this is a complex and non-obvious relationship to the wire count. Andy Dingley (talk) 11:52, 31 July 2008 (UTC)
thread_title: Grit Size Table Source

message: I thought regular Al2O3 was a ceramic.
:It is. I've changed it.--64.122.105.220 (talk) 18:53, 30 July 2008 (UTC)
thread_title:  "ceramic aluminum oxide" 

message: Exactly what was patented in USA in 1834? Sandpaper/glasspaper was being produced before then. Might this refer to a new process or adhesive?
Have also added note on Oakey in UK. Ephebi 17:12, 27 November 2006 (UTC)
replies: text: I fixed it, it apparently was a process for making it (based on the Isaac Fischer article.)Luigizanasi 00:41, 28 November 2006 (UTC)

text: The cleaner is basically a crepe rubber material.
There needs to be a reference of some sort to the statement that 3M invented the waterproof sandpaper.  —Preceding unsigned comment added by Tikigod2010 (talk • contribs) 14:37, 2 June 2010 (UTC)

text: I have noted your request in the article. Wizard191 (talk) 18:40, 2 June 2010 (UTC)

text: Per WP:MOS Wikipedia doesn't used trademark symbols. Wizard191 (talk) 00:00, 7 July 2010 (UTC)
thread_title:  History 

message: An editor asked on the main article page:
"What is sandpaper grade?! I can't find it anywhere on the internet"
(Piano non troppo (talk) 10:50, 22 July 2009 (UTC)
replies: text: Unless I'm missing something, I would think the sandpaper grade is the same as the sandpaper grit. Wizard191 (talk) 16:35, 22 July 2009 (UTC)
thread_title: Question on grade

message: Does anyone have good details on 3M's original Wet & Dry?  In particular a patent number for it.
I'm finding some contradictions in just why it was waterproof. It seems that there were other abrasives around at this time that were already on waterproof backings (most metalworking emery cloth is, as it's a cloth backing not paper). I suspect that 3M's innovation wasn't to waterproof the backing, so much as the adhesive used. As these were animal glues (I think mostly rabbit skin, for flexibility) these were the real water limit for other coated papers.
I'm also trying to find a 1930s precursor to Micromesh abrasives, developed for polishing early plastics. This was coated onto moleskin cloth, which gave a similar "floating" effect to modern Micromesh, with similar benefits for fine polishing. I think this stuff was made somewhere in Lancashire (near the cloth weavers). Andy Dingley (talk) 21:57, 19 January 2016 (UTC)
thread_title:  Wet and dry? 

message: Searching the internet, I am having difficulty locating grit size information for ultrafine microgrit papers beyond CAMI 1000. Papers in grades 2000, 3000, 5000, 8000, 10000 and 12000 can be found, but size information for the grit particles of these grades seems nonexistent. If someone has access to a reference for these abrasives, please add them to the table. Thank you.47.147.7.207 (talk) 01:44, 7 June 2017 (UTC)
thread_title:  Grit Size Table - Finer Grades? 

message: http://wiki.diyfaq.org.uk/index.php/Sandpaper appears to be remarkably similar to this page. Is this page ripped off there, is there ripped off here or are both ripped off somewhere else? Neither lists the other among its references. --86.5.88.131 (talk) 22:17, 27 August 2021 (UTC)
replies: text: The history over there shows that it is taken from an old version of this article in 2010. (For the future – Wikipedia mirrors/copying from Wikipedia is very common, and usually they will have something somewhere on the page to mark it as being taken from Wikipedia, this one's was in the page history as it's a wiki.) Skarmory (talk • contribs) 00:22, 27 April 2022 (UTC)
thread_title:  Rip off or ripped off? 

message: not sure if there is an official formula for these but they're not random and cracking open excel one can easily derive the exponential equation used (i used excel's autofit)
for CAMI/US: particle diameter = 35733*(CAMI grit)-1.195 (R² = 0.9899)
for ISO/FEPA: particle diameter = 18510*(ISO grit)-1.017 (R² = 0.9943)
the imperfect R² is probably due to rounding
  — Preceding unsigned comment added by Hexbugman213 (talk • contribs) 16:03, 31 March 2022 (UTC)
thread_title:  formulas for grit sizes 

message: Given the recent merge, in which it was decided that sandpaper is the COMMONNAME for a coated abrasive, it now seems sensible to merge two other stubs to this page: Crocus cloth (a type of coated abrasive used in jewelry-making) and Emery paper (a type of sandpaper with a particular abrasive). The proposal is on the grounds of short text and context. Klbrain (talk) 11:07, 17 December 2022 (UTC)
replies: text: AGREE. Crocus cloth is very very short. And as for Emery paper, Emery cloth is already in sandpaper, so there whould be synergy there. Ponken (talk) 11:09, 19 December 2022 (UTC)

text: Support merge of both. Joyous! | Talk 04:05, 14 February 2023 (UTC)

text: I am late to this party, but I :Support the merge of both considering that "sandpaper" is the common name for a coated abrasive. We should probably reorganize this page where the merged types of sandpaper are all gathered under a headding. --Found5dollar (talk) 15:09, 2 May 2023 (UTC)
thread_title:  Merge proposal 

message: If anybody were comparing the "grit" notation with "x/0" notation for emery paper, here is a short reference: https://cafa-info.org/page/GritSizesForEmery It should be better sourced and included in the main table, though. FDominec (talk) 16:06, 9 November 2023 (UTC)
thread_title:  Alternate 2/0, 3/0, 4/0 ... notation