Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Carpentry

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-06-2012, 10:04 PM   #1
Newbie
 
Join Date: Jul 2011
Location: Knoxville, TN
Posts: 20
Share |
Default

Need Help with Compound Miter Saw


I have a 10" Ryobi Compound Miter Saw. It cuts perfectly square vertically. When I bevel the saw though something goes awry. The cut is no longer square.

I am doing 5.25" tall baseboards, so I have to lay it flat. The top of boards line up but all of my inside corners do not line up. The tops are perfect but then there is a gap at the bottom.

I have tried adjusting the fence but it doesn't help, any ideas?

krombie19 is offline   Reply With Quote
Old 04-06-2012, 11:46 PM   #2
Member
 
Join Date: Feb 2012
Location: ontario canada
Posts: 675
Default

Need Help with Compound Miter Saw


cope your cuts, make sure the base goes in tight

princelake is offline   Reply With Quote
Old 04-07-2012, 12:06 AM   #3
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 25,832
Default

Need Help with Compound Miter Saw


How do you know is the saw and not the floor that's off.

Prince is right, coping will always give you a tighter joint.
joecaption is online now   Reply With Quote
Old 04-07-2012, 04:57 AM   #4
Newbie
 
Join Date: Apr 2012
Posts: 6
Default

Need Help with Compound Miter Saw


Walls may not be square.
Make sure your piece is flat on the base of the saw.
Jerk is offline   Reply With Quote
Old 04-07-2012, 05:15 AM   #5
Lic. Builder/GC/Remodeler
 
AtlanticWBConst.'s Avatar
 
Join Date: May 2006
Location: New England
Posts: 7,556
Default

Need Help with Compound Miter Saw


Check the angle of the actual wall corners you are installing on; Use a speed square to see if it is an actual 90 degree angle, or if it is "off".
AtlanticWBConst. is offline   Reply With Quote
Old 04-07-2012, 05:48 AM   #6
DIY staff
 
Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 21,266
Default

Need Help with Compound Miter Saw


Gap at the bottom of a baseboard---usual cause---drywall taper at the bottom---wall is not flat--add shim or screw to keep the baseboard flat.
__________________
New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote
Old 04-07-2012, 06:31 AM   #7
Not so new
 
12penny's Avatar
 
Join Date: Nov 2008
Location: Lehigh Valley, Pa.
Posts: 932
Default

Need Help with Compound Miter Saw


Quote:
Originally Posted by oh'mike View Post
Gap at the bottom of a baseboard---usual cause---drywall taper at the bottom---wall is not flat--add shim or screw to keep the baseboard flat.
+ 1
12penny is offline   Reply With Quote
The Following User Says Thank You to 12penny For This Useful Post:
oh'mike (04-07-2012)
Old 04-07-2012, 07:52 AM   #8
Newbie
 
Join Date: Jul 2011
Location: Knoxville, TN
Posts: 20
Default

Need Help with Compound Miter Saw


Thanks for the response but I have used a square to check the cut pieces and the vertical cut is spot on. When I bevel the cut it fades away from the line.
krombie19 is offline   Reply With Quote
Old 04-07-2012, 09:43 AM   #9
journeyman carpenter
 
woodworkbykirk's Avatar
 
Join Date: Sep 2011
Location: nova scotia canada
Posts: 2,654
Default

Need Help with Compound Miter Saw


it can be a few things.... the saws fence might not be perfectly square which causes the cut to be off by one degree when you cut on a 45, there could also be a buildup of dust inside the table which causes the table to tilt when you swing it around angles.. very common if you dont blow the dust out of the saw on a regular basis

the wall may not be square.. there might be a build up of mud on the wall that needs to be scraped off before the base goes on.. i always keep a scrap peice of trim for checking angles . do to the build up of mud on inside corners and the thickness of the corner bead on outside angles the actual cut angle required is rarely exactly 45 degrees. i cut all my inside corners on 44 degrees so the face of the joint is tight , for outside mitres i cut 90 deg corners on 46 degrees to keep the face nice and tight also.

trim requires patience especially when your new to it or dont do much of it, i lead the trim installs on all the houses we renovate or build. the painters are kinda shocked that i go a little slower than most trim guys they see, however their even more shocked when they only need 1 tube of dap for 2 rooms of trim for where the trim meets the drywall as opposed to upwards of 3 tubes per single room
woodworkbykirk is offline   Reply With Quote
Old 04-07-2012, 10:22 AM   #10
Stairguy
 
Join Date: Apr 2010
Location: New Bedford, MA
Posts: 606
Default

Need Help with Compound Miter Saw


The reason this is probably happening is because there is a plastic throat plate on the table of the saw. they are usually a little flimsy. When you cut material, usually on a beveled 45, the saw blade will tend to push the plastic plate down making an out of square cut. So to avoid this, lay down a sacrificial board on top of the saw and then make your cuts on top of this.
Millertyme is offline   Reply With Quote
The Following User Says Thank You to Millertyme For This Useful Post:
kwikfishron (04-14-2012)
Old 04-07-2012, 08:44 PM   #11
Old School
 
Willie T's Avatar
 
Join Date: Jan 2009
Location: St. Petersburg, FL Minds of moderate caliber ordinarily condemn everything which is beyond them.
Posts: 3,634
Default

Need Help with Compound Miter Saw


Are you always cutting with the FACE of the base upward?

Do NOT try to cut the base with the FACE (front side) laying down on the saw table.

And cut slowly, always using a good, sharp blade........ Many dummies think that since it is often called a "chop" saw, that you are supposed to slam the saw down quickly, "chopping" the board in half. This is just begging for a lousy cut.... and it will eventually ruin your saw blade, if not the whole saw.

And let the blade come to a FULL stop before lifting it back up past what you just cut.
__________________
"True eloquence consists in saying all that is necessary, and only that which is."
François Duc de La Rochefoucauld
Willie T

Last edited by Willie T; 04-07-2012 at 08:55 PM.
Willie T is offline   Reply With Quote
Old 04-14-2012, 07:31 PM   #12
Newbie
 
Join Date: Apr 2011
Location: N/W Chi. Burbs
Posts: 10
Default

Need Help with Compound Miter Saw


Make sure that the saw is set up proper. Most saws have different adjustments pertaining to both the fence and blade itself so you can keep everything square. Check the instruction bbok that came with the saw, or go to ryobi's web and see if they have instructions you can download. Also, the walls are rarely square.

Good lock and have fun.

Glenn12 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Compound miter cut trim question robosapien Carpentry 3 07-09-2010 08:46 PM
Slide compound miter saw dinotoad Tools 11 02-10-2010 08:45 PM
Compound miter saw wont shut off kscudebec Tools 8 02-06-2009 08:00 AM
Suitable Miter Saw stand for 10" Sliding Makita compound saw zappy Carpentry 3 07-16-2008 07:33 PM
Using Compound Miter Saw Loman43 Carpentry 12 01-01-2008 01:36 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.