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+--- Thread: thin flat 2nd. files with a cutting edge/side? (/showthread.php?tid=4636)
thin flat 2nd. files with a cutting edge/side? - JonE - 07-07-2020
Can anyone give me a link to something 2.7mm thick or thereabouts which has a file edge to it, please?
I have some 6 inch-ish chainsaw files which are perfect but they have no edge - they are smooth there.
Trying to file out a flat bottom to a 3mm wide indent in aluminium - any other simple ideas welcomed.
RE: thin flat 2nd. files with a cutting edge/side? - Bruce Nicholls - 07-07-2020
Don't some flat needle files have a file edge on the thin edge?
RE: thin flat 2nd. files with a cutting edge/side? - JonE - 07-07-2020
yup, but when you have two hacksaw cuts to deal with 2mm apart, I need something that has a levelling quality to it - i.e. more of the hole width. My needle files are very thin and just fall into the hacksaw cuts rather than filing the ridge down!
RE: thin flat 2nd. files with a cutting edge/side? - Colin Wilks - 07-07-2020
Hi Jon,
Pointy triangular job out of this should do it.
https://www.amazon.co.uk/dp/B00439E2MQ/ref=cm_sw_r_cp_apa_i_NHdbFb3PJM20Y
PS sent before reading last two responses.
PPS Thinking about this further, I'd wrap a hacksaw blade in emery paper to get the required width.
RE: thin flat 2nd. files with a cutting edge/side? - Chris KC - 07-07-2020
https://www.amazon.co.uk/sourcingmap-Second-Triangular-Needle-Plastic/dp/B07D143JRH/ref=sr_1_8?adgrpid=53476155112&dchild=1&gclid=EAIaIQobChMIyqXy_PO66gIVVuvtCh03lwGKEAAYASAAEgLrmvD_BwE&hvadid=259060766371&hvdev=c&hvlocphy=9046205&hvnetw=g&hvqmt=e&hvrand=7152960511117177847&hvtargid=kwd-315917211970&hydadcr=171_1736093&keywords=3mm+file&qid=1594116837&sr=8-8&tag=googhydr-21 ?
RE: thin flat 2nd. files with a cutting edge/side? - JonE - 07-07-2020
ah brilliant, thankyou all! Was just thinking, some needle square files might also have more useable end.
RE: thin flat 2nd. files with a cutting edge/side? - Steve kay - 07-07-2020
I doubt if I am the only one looking at the wide range of suitable needle files in the workshop, and thinking, now where and when did I get any of that lot?
RE: thin flat 2nd. files with a cutting edge/side? - BobH - 07-07-2020
Last time I needed to do something like that I used a machine hacksaw blade, I ground the set flat so that I had the correct thickness, then wound gaffer tape to make a handle. I found that pulling was more effective than pushing the blade. Best of luck
RE: thin flat 2nd. files with a cutting edge/side? - jansens - 07-07-2020
A piece of suitable flat metal or plastic with some wet and dry paper wrapped around it? In the past I just folded the paper into a U shape with the metal in the bottom of the U to stiffen it and give me the flat sides and bottom to sand against. For plastic modelling I use ice block sticks with the sandpaper glued to them.
Simon
RE: thin flat 2nd. files with a cutting edge/side? - JonE - 07-07-2020
THanks. Using all the above, I think I can use the existing soft edge flat file wrapped, and that should give me nice 90 degree corners. I've ordered some more needle files though so I have a selection.