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post #1 of 8 (permalink) Old 01-28-2010, 02:19 AM Thread Starter
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Default Flush Trim Bits

I am using a flush trim bit in my router table, and am having a difficult time. I am moving the piece along the bit in the same direction as I would if the fence was on the table. At certain points, the bit will grab the piece from my hand and throw it, or just rip a huge chunk out of it, and I get to start from scratch again. Any suggestions would be appreciated.
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post #2 of 8 (permalink) Old 01-28-2010, 03:26 AM
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Originally Posted by nblumert View Post
I am using a flush trim bit in my router table, and am having a difficult time. I am moving the piece along the bit in the same direction as I would if the fence was on the table. At certain points, the bit will grab the piece from my hand and throw it, or just rip a huge chunk out of it, and I get to start from scratch again. Any suggestions would be appreciated.
Nick
You can use a flush trim bit without the fence but if doing it that way you should use a starter pin. It looks like a bolt screwed to the table top a few inches away from your bit. You brace your material against the pin then ease into the cutter. Once into the bit & material is against the bearing you can come off the pin. You should keep constant pressure against bearing during cut. For the table you should be moving right to left & your starting pin should be mounted on the right side of the bit. Never do this with a bit without a bearing. Bits without bearings must use the fence.

http://www.youtube.com/watch?v=qqBRbpvO8k0

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Last edited by jlord; 01-28-2010 at 12:21 PM.
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post #3 of 8 (permalink) Old 01-28-2010, 12:18 PM
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Nick...

+1 on James's post!

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post #4 of 8 (permalink) Old 01-28-2010, 12:52 PM
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I use these bits all the time. But I do not use them to take more than 2mm off. I cut close to the template with the bandsaw, then onto the router table. If the wood is thick. I may start with pattern flush trim (Bearing nearest the shank) and then reverse the timber an use the flush trim, with less material to remove. It pays to have a variety of bits.
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post #5 of 8 (permalink) Old 01-28-2010, 01:17 PM
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Hi

I will 1+ on James post but I would add you don't need a starter pin all the time and you don't need to pre cut the project with a band saw, the trim bit will make it's own path so to say, many times the pin can be a real PITA item on the table..if you set up a small fence on the project the bearing on the trim bit will follow the small fence,it can be a template, strait stock, curve stock what every, it's a great way to make templates...and copy most patterns without any pre cuts.

If you watch Bob R. and Rick R. of the RWS like I do you will see them use the stick way all the time with the trim bits...I will say I like using a 1/4" shaft and a 1/4" ( OD) wide cutters on the trim bit they cut most stock like butter


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post #6 of 8 (permalink) Old 01-28-2010, 01:46 PM
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Originally Posted by nblumert View Post
I am using a flush trim bit in my router table, and am having a difficult time. I am moving the piece along the bit in the same direction as I would if the fence was on the table. At certain points, the bit will grab the piece from my hand and throw it, or just rip a huge chunk out of it, and I get to start from scratch again. Any suggestions would be appreciated.
Nick
May be a silly question but which side of the bit are you using? You should be on the front side. If your on the back side the bit would be digging into the wood and pulling it out of your hands. I made this mistake once when I was widening a dado cut in a piece of MDF and moved the fence the wrong direction pulling from the wrong side of the groove and had my piece make a nice dent in the new drywall of my shop.
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post #7 of 8 (permalink) Old 05-20-2010, 01:43 PM
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James - THANK YOU. That was the explanation I needed. The video helped too.

Bob - forgive me for being slow on the uptake, but now that you have that nice box, what do you do with it?
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post #8 of 8 (permalink) Old 05-20-2010, 03:59 PM
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Hi

It's not a box so to speak it's a frame to hold templates, many times when you make/use templates you will need more than one to get the job done, with the frame you would just pop in the next template, many times when you use templates you can't clamp them in place that's what the frame holder will do....

see my Gallery or uploaded items to see how it used. for many router jobs if you take a peek at Harry's new post#2 and #3 http://www.routerforums.com/guide-bu...nners-3-a.html you will see he likes to glue up boards to do the same thing but I like to make them all in one ..it's just a lot quicker on the router table.

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Quote:
Originally Posted by indnajns View Post
James - THANK YOU. That was the explanation I needed. The video helped too.

Bob - forgive me for being slow on the uptake, but now that you have that nice box, what do you do with it?



"It's fine to disagree with other members as long as you respect their opinions"

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