Deburring MS20257-P3 Piano Hinges
Posted: Wed Oct 05, 2022 10:41 pm
by dxlusby84
Greetings Builders,
For the piano hinges that come in our various kits used with the elevators & rudders, do these hinges require deburring of the machined part (before any rivet holes)? By that, I mean all straight stock edges, the straight edges of each knuckle, and each knuckle’s rolled edges (both exterior and interior)… If so, what have you found is the best tool to do this? A grinder wheel won’t have the agility to get in there, dremel bits with tapers always feel like they’re too aggressive and won’t get to the rolled interiors - does that leave just using a good array of micro files and doing it “the hard way” ?
Thanks
Re: Deburring MS20257-P3 Piano Hinges
Posted: Wed Oct 05, 2022 11:29 pm
by Rynoth
I never found any burrs on the machined edges of the Piano hinges.
You might just give them a quick scrub with a scotchbrite pad.
Re: Deburring MS20257-P3 Piano Hinges
Posted: Thu Oct 06, 2022 7:41 am
by Bryan Cotton
I’m usually a deburring nutjob. I only deburr the ends where I cut them.
Re: Deburring MS20257-P3 Piano Hinges
Posted: Thu Oct 06, 2022 10:43 pm
by 9GT
These wheels are a little pricey but do the job quickly and professionally. Get yourself a HF buffer and stand and your good to go.
https://store.vansaircraft.com/scotch-b … l-sbw.html
Re: Deburring MS20257-P3 Piano Hinges
Posted: Sat Oct 08, 2022 10:18 am
by Area 51%
The piano hinges are anodized, so any attempt to de-burr them will only compromise their corrosion protection.
A cut edge and/or a drilled hole should be the only reason to de-burr a hinge half.
Re: Deburring MS20257-P3 Piano Hinges
Posted: Sat Oct 08, 2022 5:04 pm
by dxlusby84
Sounds like these machined parts are the exception to the deburring rule… Will inspect them, of course, but not obsess over deburring them during part prep.
Thanks,