{"id":1244,"date":"2018-09-09T22:17:40","date_gmt":"2018-09-09T12:17:40","guid":{"rendered":"http:\/\/leederville.net\/rocket\/?p=1244"},"modified":"2018-10-28T20:43:10","modified_gmt":"2018-10-28T10:43:10","slug":"attaching-the-fins-to-the-air-frame","status":"publish","type":"post","link":"https:\/\/leederville.net\/rocket\/index.php\/2018\/09\/09\/attaching-the-fins-to-the-air-frame\/","title":{"rendered":"Attaching the fins to the Air-frame"},"content":{"rendered":"

The Jigs<\/h2>\n

I created some jigs using my 3-D printer to hold the fins in place. I had a few goes at getting ones that would slip on easily…but not too easily. This is so the fins could not flop about.<\/p>\n

 <\/p>\n

\"Two<\/a>
Two jigs to hold the fore\/aft section of the fins.<\/figcaption><\/figure>\n

You may wonder how I avoided JB-Weld getting on to the Jig. Well, I have a gap between the air-frame and the inner surface of the Jig. So I was able to carefully insert the fin with minimal or no JB-Weld getting on the jig. In some cases the fin did stick a little to the 3-d print, but it was easily pried off.<\/p>\n

 <\/p>\n

Attaching the Fins<\/h2>\n

I used JB-Weld Epoxy to attach the fins, just like I did for the previous rocket build. I didn’t have the luxury that I had then of being able to see through the air-frame to look at the adhesion of the epoxy. But that is okay. I only attached one fin at a time, giving it 24 hrs for the epoxy to cure.<\/p>\n

Photos<\/h2>\n

Here are some photos of the process.<\/p>\n

\"Laying<\/a>
Laying out equal amounts of JB-Weld components.<\/figcaption><\/figure>\n
\"Thoroughly<\/a>
Thoroughly mixing the JB-Weld<\/figcaption><\/figure>\n
\"Applied<\/a>
Applied JB-Weld to the fin root.<\/figcaption><\/figure>\n
\"Seated<\/a>
Seated the fin into position.<\/figcaption><\/figure>\n

 <\/p>\n

\"Checking<\/a>
Checking fin alignment<\/figcaption><\/figure>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

The Jigs I created some jigs using my 3-D printer to hold the fins in place. I had a few goes at getting ones that would slip on easily…but not too easily. This is so the fins could not flop about.   You may wonder how I avoided JB-Weld getting on to the Jig. Well, … Continue reading Attaching the fins to the Air-frame<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21,15],"tags":[],"_links":{"self":[{"href":"https:\/\/leederville.net\/rocket\/index.php\/wp-json\/wp\/v2\/posts\/1244"}],"collection":[{"href":"https:\/\/leederville.net\/rocket\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/leederville.net\/rocket\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/leederville.net\/rocket\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/leederville.net\/rocket\/index.php\/wp-json\/wp\/v2\/comments?post=1244"}],"version-history":[{"count":4,"href":"https:\/\/leederville.net\/rocket\/index.php\/wp-json\/wp\/v2\/posts\/1244\/revisions"}],"predecessor-version":[{"id":1359,"href":"https:\/\/leederville.net\/rocket\/index.php\/wp-json\/wp\/v2\/posts\/1244\/revisions\/1359"}],"wp:attachment":[{"href":"https:\/\/leederville.net\/rocket\/index.php\/wp-json\/wp\/v2\/media?parent=1244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/leederville.net\/rocket\/index.php\/wp-json\/wp\/v2\/categories?post=1244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/leederville.net\/rocket\/index.php\/wp-json\/wp\/v2\/tags?post=1244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}