Looking For Advise On 'Changing Knives On PC Bench jointer - Router Forums
 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 04-12-2012, 09:16 AM Thread Starter
Registered User
 
Join Date: Jun 2011
Country: United States
First Name: Jerry
Posts: 2,645
 
Default Looking For Advise On 'Changing Knives On PC Bench jointer

I have a Porter Cable Bench Jointer that has had quite a bit of use, it is still doing a pretty good job of cutting with the original set of knives but I know that it will be a short time before I will need to change the knives. i am sure that instruction for the procedure are in the owner's manual, but I have misplaced it i guess. What I am wonderins is how difficult. it is to change the knives and adjust them so that they are level and/or on a common plane with the outfeed table. I'm a little afraid to start on the job until I am sure that I know what I am doing.

By the way, this little bench jointer has done a pretty good job for me, I have read a few negative reviews on the tool, but the one that I have seems to do what it is supposed to do. All I did when I first got it was to cut a couple of shims from a coke can to shim up one side of the in feed table so that it was closer to being common with the out feed table. I have been told that this isn't as important as is the issue of having the out feed table properly aligned with the knives. In that this is a critical adjustment, I sure don't want to mess it up and need to be sure that I can do it properly when the time ocmes for me to change knives.

Jerry
Colorado City, TX
Jerry Bowen is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 04-12-2012, 03:55 PM
Moderation Team
 
Cherryville Chuck's Avatar
 
Join Date: Sep 2010
Country: Canada
First Name: Charles
Posts: 15,638
 
Default

I don't know that particular machine but there are only 2 methods of adjusting knives I know of on a machine with straight cutters. One is with springs behind the knives pushing them up and the other has jack screws that are adjusted to level the blade.
In either case, I use a flat piece of hardwood laid on the outfeed table and adjust the blades until they just touch the piece of hardwood. I.E. as you rotate the knife backward and forward it should just scrape the bottom of the piece of wood. It takes a little time and make sure that both corners of the blade are equal. In the end, the blades have to be dead level with the outfeed table.

You have a good chance of finding the manual online if you go to the manufacturer's website.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
Cherryville Chuck is online now  
post #3 of 6 (permalink) Old 04-12-2012, 04:48 PM Thread Starter
Registered User
 
Join Date: Jun 2011
Country: United States
First Name: Jerry
Posts: 2,645
 
Default

Charles, your explanation confirms what i was thinking and your description sounds easy enough as far as concept goes, i realize thet the adjustments are very critical and will take some putzing to get things right. Thanks for your taking time to help me.

Jerry
Colorado City, TX
Jerry Bowen is offline  
Sponsored Links
Advertisement
 
post #4 of 6 (permalink) Old 04-12-2012, 08:45 PM
Moderation Team
 
Cherryville Chuck's Avatar
 
Join Date: Sep 2010
Country: Canada
First Name: Charles
Posts: 15,638
 
Default

No problem. You can check to see to if they're right by running a couple of boards thru on edge and see if they fit flush together over the entire length. Also, if the knives are a little too low, you may feel the end of the board bump into the end of the outfeed table or as it goes onto the outfeed table you may see daylight under the board just in front of the cutter head. If the knives are too high and you run a long enough board thru and keep all the pressure down against the infeed table you will see daylight under the lead end of the board and it will want to seesaw on the lead edge of the outfeed table.
Good luck with it. It can take some playing around to get it right sometimes.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
Cherryville Chuck is online now  
post #5 of 6 (permalink) Old 04-13-2012, 10:18 AM
Retired Moderator
 
Mike's Avatar
 
Join Date: Nov 2004
Country: United States
First Name: Mike
Posts: 11,921
 
Send a message via Skype™ to Mike
Default

Jerry, I am guessing this is one of the new models since you did not include a model number or size. Chances are good it is the same as a Delta TP305 12-1/2". I own one of these and blade adjustments are simple. It is very likely the same dust collection adapter will work on it and I highly recommend using one. You can download a manual from portercable.com.

Mike
"Living in the D" (this means Detroit!)
"It's fine to disagree with other members as long as you respect their opinions"
Mike is offline  
post #6 of 6 (permalink) Old 04-13-2012, 11:53 AM Thread Starter
Registered User
 
Join Date: Jun 2011
Country: United States
First Name: Jerry
Posts: 2,645
 
Default

Hi Mike,
This machine is a jointer not a planter, the model is the Porter Cable JT160 6" Shopmaster. As I said, the jointer has done a pretty good job for me I think, I say I think because I had never used a jointer before I acquired this one. I have been hesitate to change out the knives and am not going to tackle it as long as my workpieces keep coming out as well as they have been, but I do know that the time to change them is going to come along and I want to be prepared to do so when that happens.

Charles has given me a pretty good description of what I need to do and his help is very much appreciated. If I have a look around, I should find the Owner's Manual, can't image thronwing it away.

I probably will contact Rockler and see what they have in the way of tools that I can use for the job.

Thanks for your response to my question.

Jerry
Colorado City, TX
c
Jerry Bowen is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Router Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Jet JJ-12 Jointer Information? ORBlackFZ1 Tools and Woodworking 6 03-22-2014 01:10 AM
Delta DJ20 8" Model 37-365X Jointer Knives TRN_Diesel Tools and Woodworking 1 03-28-2011 10:20 PM
Freud knives for Jet jj-6csx jointer? AxlMyk Tools and Woodworking 10 04-10-2010 05:04 AM
Setting Jointer knives jd99 Tools and Woodworking 13 10-28-2009 10:49 PM
Installing jointer knives - Help - Old 4" Joe Lyddon Tools and Woodworking 4 10-20-2007 10:54 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome