{"id":6833,"date":"2024-10-26T10:58:06","date_gmt":"2024-10-26T09:58:06","guid":{"rendered":"https:\/\/www.railway-models-and-art.co.uk\/blog\/?p=6833"},"modified":"2024-10-26T10:58:06","modified_gmt":"2024-10-26T09:58:06","slug":"a-slight-side-diversion-from-the-18-pounder-field-gun","status":"publish","type":"post","link":"http:\/\/www.railway-models-and-art.co.uk\/blog\/?p=6833","title":{"rendered":"A slight side diversion from the 18 Pounder Field Gun."},"content":{"rendered":"\n<p>Over on one of the forums that I frequent, it was suggested that I might add rifling to the barrel. Well not quite rifling in the barrel but perhaps equally mad.<\/p>\n\n\n\n<p>From the photos of the real thing I note that the wheels have brass hubs. Nothing unusual there you might think but unlike most hubs etc which have hexagonal collars for tightening&nbsp;with a spanner these have octagonal heads. Now I have a hex collet block and a pin vice which at a pinch cut be brought into service but they would still only have six sides. Again I&nbsp;could have drawn them up and had them 3D printed then painted them with brass paint and job done.<\/p>\n\n\n\n<p>However on one of my favourite machining YouTube channels the guy who does some amazing things uses a &#8220;5C Spin Indexer&#8221; For those that are not familiar &#8220;5C&#8221; is a type of collet.&nbsp;I don&#8217;t possess any 5C collets, so although I could make use of the functionality of a spin indexer the likelyhood of my buying one was very slim. Then some time ago I discovered&nbsp;that Arc Euro Trade the machinery omany that I bought my mill from stock a 5C spin indexer that has an ER32 collet adapter. Now I don&#8217;t have any ER32 collets either but I could see&nbsp;me getting more use from them as they are much more flexible in use than 5C collets. With 5C collets you pretty much have to have a separate collet for every size whereas ER&nbsp;collets usually have approximately 1mm range so a 10mm ER collet would Hold stock from 10mm diameter down to 9mm diameter so you need less collets to cater for a wide range&nbsp;of stock sizes.<\/p>\n\n\n\n<p>Having said all that the 5C\/ER32 spin indexers were still getting on for \u00a3200 so I couldn&#8217;t justify buying one. Then just after Guildex I got a sales email from Arc reducing them to just&nbsp;over \u00a3130 so having not spent up at Stafford I took the plunge. I still didn&#8217;t have an ER32 collets but my son bought me a set for my birthday.<\/p>\n\n\n\n<p>To get it to mount on my mill table I had to mill a couple of slots to accommodate the width of the T slots but that done I was able to give it a test run yesterday. &#8211; The delay in&nbsp;getting to it was working out how I might hold it to actually cut the slots.<\/p>\n\n\n\n<p>That done I gave it a test run on some 3mm brass rod. Unfortunately I hadn&#8217;t noticed the hole in the end which precluded me from using it for one of the hubs.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.railway-models-and-art.co.uk\/blog\/wp-content\/uploads\/2024\/10\/IMG_0001_1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"844\" height=\"722\" src=\"https:\/\/www.railway-models-and-art.co.uk\/blog\/wp-content\/uploads\/2024\/10\/IMG_0001_1.jpg\" alt=\"\" class=\"wp-image-6834\" srcset=\"http:\/\/www.railway-models-and-art.co.uk\/blog\/wp-content\/uploads\/2024\/10\/IMG_0001_1.jpg 844w, http:\/\/www.railway-models-and-art.co.uk\/blog\/wp-content\/uploads\/2024\/10\/IMG_0001_1-300x257.jpg 300w, http:\/\/www.railway-models-and-art.co.uk\/blog\/wp-content\/uploads\/2024\/10\/IMG_0001_1-768x657.jpg 768w, http:\/\/www.railway-models-and-art.co.uk\/blog\/wp-content\/uploads\/2024\/10\/IMG_0001_1-351x300.jpg 351w\" sizes=\"auto, (max-width: 844px) 100vw, 844px\" \/><\/a><figcaption class=\"wp-element-caption\">First play with Spin indexer<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Over on one of the forums that I frequent, it was suggested that I might add rifling to the barrel. Well not quite rifling in the barrel but perhaps equally mad. From the photos of the real thing I note &hellip; <a href=\"http:\/\/www.railway-models-and-art.co.uk\/blog\/?p=6833\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[71,74],"tags":[],"class_list":["post-6833","post","type-post","status-publish","format-standard","hentry","category-machine-tools","category-wwi-armour-modelling"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/6833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6833"}],"version-history":[{"count":1,"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/6833\/revisions"}],"predecessor-version":[{"id":6835,"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/6833\/revisions\/6835"}],"wp:attachment":[{"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6833"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}