BA Tap Guide<\/figcaption><\/figure>\n\n\n\nI even managed to use the reject first attempt at making a drawbar for the Princess which I broke during machining due to me doing the wrong order of operations. I keep one of those square plastic trays that Slaters pack their small items like plunger pick-ups horn guides etc. on my workbench and all my small offcuts of brass and nickel go into it. Once I had machined each end off it was perfect for the guide bush.<\/p>\n\n\n\n
I probably over engineered it in so much as I turned the end of the bush down to 5mm for 1.6mm and drilled a 5mm hole in the flat bar which is 1.6mm thick. It was a nice tight fit but I realised that due to the bar being drawn, it wasn’t exactly flat on top and the guide sat at a slight angle. still having the coordinates in the mill from drilling the hole I used a 6mm end mill to mill a recessed flat to accommodate the bush. I checked for squareness with a 1-2-3 block and then soldered the bush in.<\/p>\n\n\n\n
The hole in the bush is 3.3mm and will take my 6 -12ba taps freely but with virtually no sideplay. I also have a 14ba tap and I might at some point add another guide bush at the other end of the ‘handle’ with a smaller hole to take that.<\/p>\n","protected":false},"excerpt":{"rendered":"
Following my posting of the Joe Pie tap wrench on the Guild forum there was a bit of discussion on the types of tap wrenches in use and one member shared a BA tapping guide that he had bought commercially. … 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":[71,25],"tags":[],"class_list":["post-6691","post","type-post","status-publish","format-standard","hentry","category-machine-tools","category-tips-n-tricks"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/6691","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6691"}],"version-history":[{"count":1,"href":"https:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/6691\/revisions"}],"predecessor-version":[{"id":6695,"href":"https:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/6691\/revisions\/6695"}],"wp:attachment":[{"href":"https:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6691"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6691"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.railway-models-and-art.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6691"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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