How to sand router burn from concave surface?
TimTheEnchanter
| Posted in New To Woodworking on
Hi,
My router is fixed-speed and has left burn marks when making shallow divots with a plunged round-nose bit (for a game where marbles are placed in the divots). I’m looking for suggestions for how to sand these out. I can just fit the tip of my finger in – they are very shallow (i.e. at least 3/4 of a marble sits proud of the divot). Too small for any sandpaper to conform on my finger. Wood is ash.
Thanks in advance for any suggestions!
Tim (in Santa’s workshop)
photo now added – burn is visible to the right side
Replies
Burnt
I had the same problem a few years back and solved it with a variable speed drill in in a hand-held drill guide and a counter sink bit. The guide has a depth stop so all the recesses are the same, and the combination of the variable speed drill and the counter sink bit made the job easy and no burning even in cherry. If your project is not too wide you can also use a drill press.
Robert.
Another thought
You may be able to still use your corebox bit just chuck in the drill instead of the router. I have not tried this but was thinking of the shape of the hole made by the bit compared with the countersink bit. Just a thought.
Robert.
sponge?
You might try a sanding sponge, trimmed to fit the hole. You might even be able to insert a short length of 1/4" dowel into the sponge, and then chuck that in your portable drill to speed things up a bit.
Thanks for all your replies. Ultimately I ended up using the router bit as a scraper - I held it in my hand and sort of twisted it in the holes while focusing pressure against the burns and was able to scrape the worst of it out. The result isn't perfect but it's acceptable given my objectives and timetable.
Happy holidays!
another option
Gooseneck scrapers:
http://www.lie-nielsen.com/catalog.php?sku=GNS
This forum post is now archived. Commenting has been disabled