What tool will fix this?

[myxpykalix]

Look at the ragged edges where i cut the 2nd start away. I tried using different tools to make a flat surface and i'm just making it look worse. What tool would you use to fix this up?

I can't mount it on the legacy or my shopbot because it is just too fragile. I tried using a rotozip to clean it up but i don't have enough control with it. Its like trying to do it freehand with a router, it just wants to run away from me.
I was thinking about getting this attachment for the rotozip that looks like a cutting wheel and trying that, so if anyone has any better ideas i need to know them.....

8435

[jerry_stanek]

Try running your table saw blade up to just below your inside twist and slowly turn. You can use stops on your fence to hold the piece in place.

[myxpykalix]

Already tried that. The positions of the start of the "curl" on the spiral doesn't allow for much of a cut from the tablesaw because of the 10" blade diameter.

[nat_wheatley]

How about making a 'miter box' using a fine tooth hand saw? You'd want to keep the box fairly narrow and use a rigid saw to minimize saw flexing as it doesn't look like there would be much wood to bite into. Just a thought.


8436

[gerryv]

If you happen to have a portable XY table about, could you perhaps clamp your rotozip horizontally into it with your workpiece alongside to gain the steadiness. Perhaps even clamp the XY table to your 'bot table next to your rotary axis? Just letting my mind wander.

[stevem]

A rasp type bit in a die grinder is easy to control free-hand. This might also work in a Roto Zip.

http://www.tptools.com/dg/178_Die-Grinders-Carbide-Burrs.html

[jharmon]

A Fein Multimaster would do a great job with this in short order given the appropriate jig or two.

Jim

[oddcoach]

try a file and some carving gouges
you would be supprised what you can do with hand tools
John

[myxpykalix]

Gerald,
I tried clamping to the bot but the way the rotozip is curved make it hard to hold in place. I guess i'll have to make some type of jig but I wonder what tool i could use to make a jig with? lol

Steve, die grinders don't work too good on wood in my experience.

John,
Probably the simplest, easiest and most efficient and economical answer. I'll try that first...thanks to all for suggestions.

[Gary Campbell]

John...
I don't want to sound like Captain Obvoius here, but isnt the best tool for the job a ShopBot with an indexer? You should be able to drop in a bit and rotate to get whatever cut you need to clean that piece up.
Gary

[myxpykalix]

DOH! Actually the way the round portion is relative to the 90 degree angle of the bit it would only get part of that angle and the biggest reason i don't want to try it is, as has happened in the past when trying to "freehand" a cut with the bot if you accidentally hit the wrong arrow or overshoot your path you ruin the piece.
I may however remount the piece and hold it in the indexer while using the rotozip as i found some small sanding pads that i think might do the job along with John H's suggestion of a good old file. If the tools i use don't have a motor on them, i don't use em! (unless i have to)
thanks gary

[Gary Campbell]

John...
Try chucking it in the indexer. Then use the keyboard to drop the bit. Unplug the indexer motor and turn the chuck by hand. That HAS to be better than a rotozip. You can use a 1/8 bit with a follower plug on the end if it makes you feel better! LOL
Gary

[dray]

umm hand sand it