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Thread: Sanding Rounded Edges
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30th January 2007, 12:07 AM #1Intermediate Member
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Sanding Rounded Edges
I'm interested if anybody has any suggestions for building a piece of equipment to sand routed rounded edges on irregularly shaped pieces of timber.
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30th January 2007 12:07 AM # ADSGoogle Adsense Advertisement
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30th January 2007, 12:31 AM #2.
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30th January 2007, 07:55 AM #3
Get a big lump of BluTac, heat it up and mould it to the profiled edge, either innie or outie, and let it harden. I used to freeze my blob in the fridge, but nowadays I'm too impatient. Then mould the abrasive paper into the shape (without heating the BluTac and melting it again). It works well on most profiles but I find that sharp edges are really hard to keep sharp - so I sometimes use multiple passes or multiple blobs to do teh one profile.
I think in FWW they suggested using Plaster of Paris or some-such moulding compound to form the reciprocal profile and doing much like what I do.
The hard part: not accidentally sanding the faces adjacent to the profile edge.
BTW my method only seems to work well on fairly large, generous mouldings, because I find it hard preventing the paper from cracking or creasing in small stuff.
Please show us the profile.dave
nothing is so easy to do as when you figure out the impossible.
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30th January 2007, 01:19 PM #4
Finger for innies, palm for outies.
Recently had some molding with a 3/8 radius cove. Finger got a bit tired, so I cut a bit of 3/4 dowel and wrapped the paper on it. Worked a treat. Then used an offcut of the molding to sand the 3/8 radius roundover on the top.
But usually finger and palm, or a bit of rag.
Tex
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30th January 2007, 08:44 PM #5In pursuit of excellence
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Have a look at these for "outies", I have one and run it diagaonally along the grain for curved surfaces, works well :
http://www.piricdesign.com.au/Pages/...s_page-01.html
Justin.
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30th January 2007, 10:47 PM #6Intermediate Member
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Thanks for those suggestions. My edges are both innies and outies on the one piece and the profile is different on each piece. My fingers and palms are worn outies. I'm working on a mechanical solution and will keep you advised.
Any further suggestions greatly appreciated.
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31st January 2007, 06:08 PM #7.
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Would still like to see pictures of typical edges if possible. For worn out fingers and plams, half chamois wicket keeping gloves are very comfy.
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31st January 2007, 06:35 PM #8
I have the "wood Sanding Book" that I borrowed from the library. It descbibes a method that knurl touched on.
Put masking tape over a piece of your profile and then, in multiple passes, cover it with expanding foam.
Once it ihas set carefully add sandpaper with double sided tape.
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31st January 2007, 08:43 PM #9
I use upholsterers foam it easily forms the shape your sanding and applies an even pressure. Hint break the back of the sandpaper over the edge of your table.
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1st February 2007, 06:54 PM #10
Piric's blowfly sander in the drill press (or a flap sander) is great for rounded and irregular edges. Have a look at the video.
If its a profiled edge with sharp features you will need to do it by hand with a moulded sanding block.
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10th February 2007, 04:57 PM #11Intermediate Member
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Thanks Bob.
I've looked at Pirics blowfly sander and the rotary sanders you can buy but I like a challenge.
I'm working on one similar but am making the sanding sheet angled rather than vertical, since I feel this may sand over the top of my piece then fold down the sides.
I might have misled you all when I said innies and outies. As first mentioned the part I wish to sand is just a rounded edge but it does not run in a straight line its bends both ways so there are inner and outer corners.
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