{"id":7834,"date":"2026-07-03T10:40:23","date_gmt":"2026-07-03T09:40:23","guid":{"rendered":"http:\/\/www.railway-models-and-art.co.uk\/blog\/?p=7834"},"modified":"2026-07-03T10:40:23","modified_gmt":"2026-07-03T09:40:23","slug":"quarter-round-brass-boiler-to-smoke-box-joint-rings-for-ex-ner-engines","status":"publish","type":"post","link":"http:\/\/www.railway-models-and-art.co.uk\/blog\/?p=7834","title":{"rendered":"Quarter Round Brass Boiler to Smoke Box Joint Rings For ex NER Engines"},"content":{"rendered":"\n

I managed the first bit of modelling for nearly a week a few days ago. I need a number of 1\/4 round brass rings to represent the brass cover over the joint between boiler and smokebox on my ex NER engines. Thankfully many of them used the same boiler so that simplifies things a little.<\/p>\n\n\n\n

In the past I have used copper wire rolled into a ring and soldered to a piece of sheet, then filed to half thickness. Remove, re-roll with the flat side innermost and repeat. Which, not only isn’t very accurate, it’s tedious and perhaps more importantly the outer face of the final ring gets coated in solder. Neither solder or copper for that matter look like brass so I sought an alternative.<\/p>\n\n\n\n

Some time ago I bought a length of 2mm x 1mm half round brass beading and using an Arbor made from rolled 0.7mm nickel sheet. I rolled a length and turned it down for my friend’s G5. Although much better than either of us could have managed by hand, I wasn’t satisfied with it because the rolled Arbor wasn’t very rigid and being thinnish sheet which was rolled, I couldn’t tighten up the chuck too much to get a better grip without crushing it. If I’d had a collet big enough (just under 32mm) that would have worked, but ER32 collets only go up to 25.5mm and my set only goes to 20mm at present. So the three jaw it has to be.<\/p>\n\n\n\n

I decided to see what I had that I could make a more rigid Arbor from, and in amongst the bits and pieces that my local Agricultural repair guy had given me, I found a short length of 1.25″ thick walled steel tube. which just happens to be just under 32mm.<\/p>\n\n\n\n

I faced off each end so that I could be sure that it sat square in the chuck and turned a 1mm long recess in one end so that I could fit (with the aid of superglue) the ring with 1mm of the width protruding. It worked perfectly, aside from my first attempt was a little short, so I made another.<\/p>\n\n\n\n

The first one will go in the spares box for my J71 kit which has a smaller boiler.<\/p>\n\n\n\n

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Qtr Round Brass Smokebox Ring<\/figcaption><\/figure>\n\n\n\n
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Qtr Round Brass Smokebox Ring – Arbor<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
Qtr Round Brass Smokebox Ring<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
Qtr Round Brass Smokebox Ring<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
Qtr Round Brass Smokebox Ring<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"

I managed the first bit of modelling for nearly a week a few days ago. I need a number of 1\/4 round brass rings to represent the brass cover over the joint between boiler and smokebox on my ex NER … Continue reading →<\/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":[58],"tags":[],"class_list":["post-7834","post","type-post","status-publish","format-standard","hentry","category-connoisseur-models-lner-n10"],"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\/7834","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=7834"}],"version-history":[{"count":1,"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7834\/revisions"}],"predecessor-version":[{"id":7841,"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/7834\/revisions\/7841"}],"wp:attachment":[{"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7834"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7834"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7834"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}