{"id":3554,"date":"2015-05-23T23:59:31","date_gmt":"2015-05-24T03:59:31","guid":{"rendered":"http:\/\/www.rpwoodwork.com\/blog\/?p=3554"},"modified":"2016-12-07T22:56:34","modified_gmt":"2016-12-08T03:56:34","slug":"nexabond-glue-part-3-variations-in-performance","status":"publish","type":"post","link":"https:\/\/www.rpwoodwork.com\/blog\/2015\/05\/23\/nexabond-glue-part-3-variations-in-performance\/","title":{"rendered":"Nexabond glue, part 3 – variations in performance"},"content":{"rendered":"

\"Nexabond<\/p>\n

[Addendum 12\/7\/16: As of 3\/1\/16, “Nexabond” products are no longer available but the Nexabond 2500M (Medium set time) formulation is sold widely by DAP products as RapidFuse Wood Adhesive<\/a>. The short and long set Nexabond formulations are no longer available.]<\/p>\n

The informal shop tests shown in the previous post<\/a> suggest that Nexabond glue’s\u00a0bond strength develops slower in cherry<\/strong> than in the other species tested, red oak and poplar. I asked Peter Stevenson, chemist at Sirrus<\/strong>, the maker of Nexabond, about this. I wondered if the wood chemistry varies a lot between species. Here is his answer, quoted here with permission (emphases mine):<\/p>\n

“In fact, the wood chemistry does vary<\/strong> drastically in some cases. One of those being cherry, which is much more acidic than poplar, maple, and oak. The acidic properties of the wood act as a secondary stabilizer of sorts and can decrease the polymerization process. Additionally, even within the same wood species you can see some variation in set time relative to early and late wood. While we have observed some variation in set time<\/strong>, we still see adequate bond strength within half an hour for return to service\/processing demands. There will, of course, be some exceptions relative to specific scenarios which may arise.\u201d<\/p>\n

This leaves me a bit confused theoretically, because I thought red oak is more acidic than cherry. Maybe it depends on the specific acid compounds. I am not a chemist and fortunately don’t have to be one to do woodworking. What matters is what happens in the shop.<\/strong><\/p>\n

Thus, the practical conclusion<\/strong> for woodworkers, in my view, is that when working with any unfamiliar materials \u2013 woods, finishes, hardware, and glue \u2013 it pays to do a bit of trial-and-observation in the shop. In the case of Nexabond, it makes sense to take a few minutes and some wood scraps to see how quickly bond strength develops in a particular species before committing to a specific time frame for removing the clamps from a set of glue ups.<\/p>\n

Of course, if you are able to clamp the work and keep the clamps occupied for at least about a half hour, then it won’t matter. But five minutes may be too soon<\/strong> in some cases, depending on the joint, how you will handle the assembly, and, as we now learn, the wood species.<\/p>\n

Gain direct experience<\/strong> with even with the best tools and materials to use them effectively.<\/p>\n

Next:<\/strong> some thoughts on practical applications of Nexabond. (The basics were covered in the first installment<\/a>.)<\/p>\n","protected":false},"excerpt":{"rendered":"

[Addendum 12\/7\/16: As of 3\/1\/16, “Nexabond” products are no longer available but the Nexabond 2500M (Medium set time) formulation is sold widely by DAP products as RapidFuse Wood Adhesive. The short and long set Nexabond formulations are no longer available.] The informal shop tests shown in the previous post suggest that Nexabond glue’s\u00a0bond strength develops […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[31],"class_list":["post-3554","post","type-post","status-publish","format-standard","hentry","category-tools-and-shop","tag-nexabond"],"_links":{"self":[{"href":"https:\/\/www.rpwoodwork.com\/blog\/wp-json\/wp\/v2\/posts\/3554","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rpwoodwork.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rpwoodwork.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rpwoodwork.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rpwoodwork.com\/blog\/wp-json\/wp\/v2\/comments?post=3554"}],"version-history":[{"count":8,"href":"https:\/\/www.rpwoodwork.com\/blog\/wp-json\/wp\/v2\/posts\/3554\/revisions"}],"predecessor-version":[{"id":4513,"href":"https:\/\/www.rpwoodwork.com\/blog\/wp-json\/wp\/v2\/posts\/3554\/revisions\/4513"}],"wp:attachment":[{"href":"https:\/\/www.rpwoodwork.com\/blog\/wp-json\/wp\/v2\/media?parent=3554"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rpwoodwork.com\/blog\/wp-json\/wp\/v2\/categories?post=3554"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rpwoodwork.com\/blog\/wp-json\/wp\/v2\/tags?post=3554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}