« back to Woodworking Skill Share forum
|
03-15-2014 10:06 PM
|
Hi Guys, I’m having problem using a router table to make mortises in cherry. I have a 1/4” up-spiral bit (towards the router) and what I’m doing is feeding my piece each way towards the bit in order to get a perfectly centered mortise.
This works well when I’m cutting a mortise at the end of the piece but when I do a plunge mortise, I cannot get a smooth wall – mostly on the side of the bit farthest from the fence (this seems backwards to me).
I clamped on a sturdy guide rail to hold the piece against the fence, I use a lot of hand pressure, and I’m only routine 1/4” depth changes at a time, and still it chatters and turned out badly.
Since the end mortises work OK I’m really perplexed why the plunge ones don’t.
Any ideas would be appreciated.
Don
-- --- Measure twice, mis-cut, start over, repeat ---
|
12 replies so far
|
#1 posted 03-15-2014 10:21 PM
|
small spiral bits always chatter when plunging I purchased a mortiser because of this type of results try using a non spiral bit if you have no other choice they have always worked better for me
-- Please check out my new stores http://woodratnest.com and http://woodshopstore.com
|
|
#2 posted 03-15-2014 11:45 PM
|
I know other’s like and praise the up cut spiral cutters but I haven’t had great success with them. It may very well be a fault of mine. I know how a straight bit will respond, but I’m never sure with the spiral bit. Glad to hear someone else has had a straight bit perform better.
|
|
#3 posted 03-16-2014 02:48 AM
|
Thanks. I’ll give it a shot tomorrow. My spiral bit was long enough for depth of mortise I want. If I still have a problem I will try firmly mounting the wood and make a jig.
-- --- Measure twice, mis-cut, start over, repeat ---
|
|
#4 posted 03-16-2014 02:59 AM
|
?
-- --- Measure twice, mis-cut, start over, repeat ---
|
|
#5 posted 03-16-2014 07:19 AM
|
I have to tell you the best up cut bits I have tested for a review were the White side
-- Please check out my new stores http://woodratnest.com and http://woodshopstore.com
|
|
#6 posted 03-16-2014 07:30 AM
|
SuburbanDon – I agree with ???? :)
|
|
#7 posted 03-16-2014 07:32 AM
|
I too have notice the up cut spiral bits have a significant amount of chatter, must be the nature of the beast. Also the reason I got a dedicated mortiser. I am, however, considering making a horizontal mortiser somewhere down the road….
|
|
#8 posted 03-16-2014 08:32 AM
|
I’m wondering if the spiral bits work best with the more powerful routers or if the speed setting has to be just right. Just a thought.
-- Mike, an American living in Norway.
|
|
#9 posted 03-16-2014 08:41 AM
|
really i think they flex too much when they are this small I prefer the straight cutter and I done have this problem. When I am on the Woodrat 900 or 600 I have a plunge bar and a control and the mortise rail all make cutting these small mortises fast even faster than my hallow chisel mortiser
-- Please check out my new stores http://woodratnest.com and http://woodshopstore.com
|
|
#10 posted 03-16-2014 11:23 PM
|
Sorry that ”?” Was not intentional. I could not delete the post.
Thanks for your replies. Today I made a jig (tray with a slot) and had similar results. This was done with a straight dado bit. I will try other things.
-- --- Measure twice, mis-cut, start over, repeat ---
|
|
#11 posted 03-17-2014 03:00 AM
|
I think I solved this problem but have not verified it yet. The speed may be too. I just realized it is set to 5.
-- --- Measure twice, mis-cut, start over, repeat ---
|
|
#12 posted 03-18-2014 12:43 AM
|
Solved. The speed was not as important as getting a 1/2 shank bit and a slow feed rate.
-- --- Measure twice, mis-cut, start over, repeat ---
|
Have your say...
You must be signed in to reply. |
| Forum |
Topics |
Woodworking Skill Share
Your woodworking skills are displayed for several lifetimes in each project. Have you had to compromise your project...
|
12026 |
Woodturning
On the lathe, by the lathe: do you have questions? frustrations? tips? This forum is for all the woodturners out there.
|
2102 |
Woodcarving
Relief, 3D, chip-carving, whittling; carving knives, chisels, pocket-knives, power tools. If you are a carver or want...
|
431 |
Scrollsawing
Intarsia, fretwork, intricate design cutting and more! This forum is for scrollsawers: share your tips, ask questions...
|
340 |
Joinery
Have a question? a tip/strategy to share? a challenge, perhaps? Share your "joinery" discussion here.
|
1369 |
Finishing
The finish, whether paint, wax, stain, or something else, can make or break a project. What are your tips and questio...
|
4899 |
Designing Woodworking Projects
Looking for information on designing your projects? Having difficulties reading project plans? Looking for help with ...
|
6689 |
Power Tools, Hardware and Accessories
Are you unsure of which tools, or hardware, you need, or which brands to buy? Investing in tools and hardware can be ...
|
28033 |
CNC Woodworking
Questions and answers about CNC machines, tooling, best practices, and projects.
|
211 |
Hand Tools
Wood, your hand tools, you and a little know-how. Share your questions, tips and strategies for the use and maintenan...
|
5403 |
Jigs & Fixtures
Using a jig is like having a couple extra hands helping out. Show us your jigs, share your tips, strategies and, of c...
|
1417 |
Wood & Lumber
Different wood requires different woodworking strategies - from cutting to finishing. Share your tips and challenges ...
|
6223 |
Safety in the Woodworking Shop
Before you pick up those woodworking tools, take the time to ensure your safety in the shop! Eyes, ears, fingers, and...
|
1387 |
Focus on the Workspace
Are you looking for or do you have tips to share regarding the workshop? Storage, equipment placement, efficiency, an...
|
2152 |
Sweating for Bucks Through Woodworking
If you are selling your work, then you have entered a woodworking dimension with added complexity and stress. If you...
|
1185 |
Woodworking Trade & Swap
All of us are holding onto treasure in our shops, that we either don't need, don't want, or could part with if presen...
|
4753 |
LumberJocks.com Site Feedback
Connect with the Website Gurus and tell us what you are thinking, suggestions, problems, functionality issues, and so...
|
2197 |
Coffee Lounge
Need a break from all the standing and wood dust? Chat with your Forum Friends about their projects, their life, thei...
|
8842 |
|
