Nocoolname Posted May 4, 2021 Share Posted May 4, 2021 Hi folks! One of the challenges I often come up against when making kits is how to deal with tubular surfaces especially where they have been attached to the sprue. I've got pretty much every type of file and sander that 'I' could find at least and while some are thin or curved or narrow I've yet to find one that is concave or like the interior of a tube to make sanding stubs on tubular parts without damaging the tubular profile easier. Just wondering if any fellow BM'ers have come across any kind of tool that might fit the description above? Cheers Nocool Link to comment Share on other sites More sharing options...
Graham Boak Posted May 4, 2021 Share Posted May 4, 2021 I put "concave files" into Bing and it came straight up with a Diamond Guitar Fret Crowning file. Not cheap but seems to be what you are looking for. I didn't look any further for alternatives. Link to comment Share on other sites More sharing options...
tank152 Posted May 4, 2021 Share Posted May 4, 2021 I take you're looking for something that won't flat spot anything tubular? I've got one of these https://www.hmhobbies.co.uk/precision-chamfering-tool-r-boko-v2-shimomura-alec.html Sand the part lightly and then give it a couple of swipes with one of these to restore it. Heres a couple of types from a uk seller. https://www.ebay.co.uk/itm/254563243305?epid=14028912781&hash=item3b4526d529:g:0PwAAOSwnFZXVJM2 https://www.ebay.co.uk/itm/254563248347?epid=20029000687&hash=item3b4526e8db:g:dFoAAOSwbERejNj5 1 Link to comment Share on other sites More sharing options...
Graham Boak Posted May 4, 2021 Share Posted May 4, 2021 IPMS UK also sell such things. Link to comment Share on other sites More sharing options...
Mike Posted May 4, 2021 Share Posted May 4, 2021 You can use the edge of a concave curved blade to adze the material off, or a Flex-I-file, or one of those shield-shaped metal scrapers that have lots of different curved shapes cut into them. Lots of options really, once you know what to call them Link to comment Share on other sites More sharing options...
tank152 Posted May 4, 2021 Share Posted May 4, 2021 15 minutes ago, Mike said: You can use the edge of a concave curved blade to adze the material off, As in one of these, https://www.scalemodelshop.co.uk/product/no-12-non-sterile-carbon-steel-scalpel-blade-5-pack-swann-morton-0104/ Link to comment Share on other sites More sharing options...
dnl42 Posted May 4, 2021 Share Posted May 4, 2021 35 minutes ago, tank152 said: I take you're looking for something that won't flat spot anything tubular? I've got one of these https://www.hmhobbies.co.uk/precision-chamfering-tool-r-boko-v2-shimomura-alec.html Sand the part lightly and then give it a couple of swipes with one of these to restore it. Heres a couple of types from a uk seller. https://www.ebay.co.uk/itm/254563243305?epid=14028912781&hash=item3b4526d529:g:0PwAAOSwnFZXVJM2 https://www.ebay.co.uk/itm/254563248347?epid=20029000687&hash=item3b4526e8db:g:dFoAAOSwbERejNj5 I saw that tool a short while ago--it looked quite good. I'll think more on this... I've learned to use an equaling file to remove the high spots--as one would use a plane. I then wrap an abrasive pad around the curve to keep the rounded shape. Link to comment Share on other sites More sharing options...
Mike Posted May 4, 2021 Share Posted May 4, 2021 17 minutes ago, tank152 said: As in one of these, https://www.scalemodelshop.co.uk/product/no-12-non-sterile-carbon-steel-scalpel-blade-5-pack-swann-morton-0104/ That's exactly the type, yes 1 Link to comment Share on other sites More sharing options...
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