Wood with knots - Alder - Router Forums
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post #1 of 20 (permalink) Old 09-29-2017, 08:50 AM Thread Starter
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Default Wood with knots - Alder

I am new to the forum and have been searching for using a router table with knotty alder. I am going to be making a large frame (4x4) using knotty alder wood. I am brand new to routing. I have a bosch router and router table. I am struggling getting through the small knots in the alder wood. Are there any tips? These are not loose knots. I am using this bit: CMT 855.902.11 Molding Bit, 1/2-Inch Shank, 1-1/16-Inch Diameter, Carbide-Tipped.

Any help or links to help would be great. I cannot seem to find much searching online for knots. One forum will say avoid knots altogether, another says the bit should have no problem with knots.
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post #2 of 20 (permalink) Old 09-29-2017, 10:16 AM
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Hello and welcome to the forum. Amy
What do mean by trouble are the knots coming apart, if not, do not take a full bit with router you need to sneak up on the full profile, also which profile are you trying to route.

Looking forward to your participation.
Filling out your profile to include (first name,tools and short bio is strictly (optional )but does help members to better relate to each other.
Thank You John
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post #3 of 20 (permalink) Old 09-29-2017, 10:54 AM Thread Starter
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No, the knots are not coming apart. The router gets stuck or moves slowly. I am brand new to this, so I know it's user error. As for profile... I really don't know. More to research! It is a 1x4 knotty alder board, I'm wanting to put a nice edge on the frame (the 4" side).
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post #4 of 20 (permalink) Old 09-29-2017, 11:33 AM
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welcome Amy..
are you cutting the face or the edge of 1x4???
if it'd the face try cutting in multiple passes...
what speed are you turning the bit at???
also, is your pit sharp and clean???

..
Attached Files
File Type: pdf Care and Sharpening of Router Bits.pdf (2.21 MB, 32 views)

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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post #5 of 20 (permalink) Old 09-29-2017, 11:35 AM
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some good reading that may help you out...

.
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File Type: pdf R5 Climb-Cutting Versus Chip-Cutting.pdf (176.1 KB, 36 views)
File Type: pdf R5 CLIMB CUTTING.pdf (74.4 KB, 31 views)
File Type: pdf R1 ROUTER FEED DIRECTION 5.pdf (54.6 KB, 29 views)
File Type: pdf R1 ROUTER FEED DIRECTION 2.pdf (90.0 KB, 27 views)
File Type: pdf R ROUTER SAFETY 2.pdf (34.4 KB, 24 views)
File Type: pdf R ROUTER SAFETY 1.pdf (73.3 KB, 27 views)
File Type: pdf Routing for beginners - Lesson - 5.pdf (4.36 MB, 29 views)
File Type: pdf Routing for Beginners - Lesson - 4.pdf (1.14 MB, 29 views)
File Type: pdf Routing for Beginners - Lesson - 3.pdf (856.1 KB, 25 views)
File Type: pdf Routing for Beginners - Lesson - 2.pdf (1.36 MB, 30 views)
File Type: pdf Routing for Beginners - Lesson - 1.pdf (1.50 MB, 28 views)
File Type: pdf RouterBitBasics_en.pdf (1.78 MB, 28 views)
File Type: pdf ROUTER FEED DIRECTION 5.pdf (54.6 KB, 32 views)
File Type: pdf R5 TEAR OUT - How to avoid....pdf (341.1 KB, 31 views)
File Type: pdf R5 ROUTER SPEEDS-BURNING.pdf (212.1 KB, 34 views)
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This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
Stick486 is online now  
post #6 of 20 (permalink) Old 09-29-2017, 11:38 AM
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a bit more...

..
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File Type: pdf Collet_Maintenance.pdf (86.2 KB, 26 views)
File Type: pdf Cleaning Blades and Bits.pdf (194.9 KB, 27 views)
File Type: pdf Care and Sharpening of Router Bits.pdf (2.21 MB, 27 views)
File Type: pdf 17profiles_3bits.pdf (2.10 MB, 21 views)
File Type: pdf STUCK ROUTER BITS.pdf (117.1 KB, 22 views)
File Type: pdf READING GRAIN.pdf (135.0 KB, 24 views)
File Type: pdf R4 SPLINES 1.pdf (100.1 KB, 21 views)
File Type: pdf R3 Router Maintenance.pdf (501.1 KB, 23 views)
File Type: pdf Guide to Router Collets.pdf (163.0 KB, 25 views)
File Type: pdf GUIDE BUSHINGS.pdf (246.7 KB, 24 views)

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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post #7 of 20 (permalink) Old 09-29-2017, 11:56 AM
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some helper hints to reduce friction...

add UHMW tape to your fence...
this tape cand easily be had in 4'' wide strips/rolls...
great for the plates on your saws and the table saw fence...
most anyplace you want a no-mar slick surface...
Slippery (Low-Friction) Tape - Lee Valley Tools

wax your table tops...


.
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File Type: pdf WAX.pdf (44.1 KB, 26 views)

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
Stick486 is online now  
post #8 of 20 (permalink) Old 09-29-2017, 12:38 PM
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Amy,

You've got good a quality bit, which Bosch router? It sounds like it is trying to take too much off at one time. You can set the bit further back in your fence and try to take the cut in 3 passes, and see how that works.
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post #9 of 20 (permalink) Old 09-29-2017, 12:53 PM
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Is this the type of bit you are using?
https://duckduckgo.com/?q=+CMT+855.9...3L._SL160_.jpg

If it is you are running your material through on edge standing up with the face against the fence?
You should have a good feather board set up.
If you can try not to cut it in one pass like was mentioned above, take 2-3 passes setting the fence back each time til a full profile cut is made.
Set the fence, run each board through, then reset the fence , run them again, and again,if needed til you have a full depth of cut.
The cut the miters on the ends and assemble.

One of the main points is to have a good set up to keep the boards flat against the fence, a 4" high board can be tilted away from the fence easily when it is cutting through a knot.
Try to keep the feed rate steady to keep from burning.

I like to work with alder it machines nicely and takes stains readily.

Be sure to have a sharp bit

Don't give up, this should work for you.

Herb
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post #10 of 20 (permalink) Old 09-29-2017, 01:07 PM
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Amy, I think you're probably trying to take too much off at once. I like to take 3 passes or more. I generally try to take off an eighth of an inch or so max on each pass, depending on the bit, with a final pass taking off just a tiny amount so it leaves a nice finish. Knots are very hard as a rule, so I try to avoid routing through one if possible, it doesn't take much to greak a carbide bit. Clear stock is quite expensive, but for finished projects, a clean, knot free edge is preferred, by me at least. I often use some pine from HD which has knots in it, but look for pieces that have long clear sections and use those sections. The sections with small knots, if long enough, get used for random projects, jigs, etc.

Stick's reading list is pretty long, but over time definitely worth digesting.

Glad you decided to join the fun here and in woodworking. My daughter is also an Amy, but spelled more in the French manner. I wish she were interested in woodworking, then I'd have someone to leave my tools to.

We all like to answer questions, to offer help and support, so ask away.
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