Forum Title: Can this joint be better?
I'm putting in new interior doors in my house and now I'm starting to trim the doors. I cut a few pieces to 45 degrees and they seem to fit together well, but I've never done this before, so I need validation :-) Is this joint good or can it be improved? The molding is pre-primed MDF and I plan to spray paint it after I have all the pieces ready. I think that the line should be almost unnoticeable after painting. I could even touch up the joint with some paint after installation to make it even less visible, if necessary. The slight gap on top can probably be closed by putting in a brad nail from the top. What do you think - good, OK or bad?
Category: Windows & Doors Post By: ROSA CHAPMAN (Cedar Rapids, IA), 01/14/2019

Did you check the humidly level with a real gauge? Is there a bathroom exhaust fan, and is it being left on a few min. after taking a shower? Is there an exhaust fan over the stove that blows outside? Did the installer apply caulking around the stop before installing the window? Is there caulking around the frame of the window on the inside and out? If you had the old style windows with weights there about a 4 wide empty hole that needed to be filled with insulation on the sides of the windows letting in cold air. When it hits the warm side of the window it's going to condense the moist air in the house.

- TERESA STEWART (Temecula, CA), 02/08/2019

Looks like that old crack in the upper right hand corner could be kicking your top piece out just a tad, so, if you haven't, you might try working it down a bit. Otherwise, as Gunguy said, it isn't bad. Keep your saw table dusted off, so you don't get a build up behind the stock, and, if you have closet interiors to do, that's not a bad place to start, until you work the bugs out. To Gunguy's point, saws need to be checked periodically for proper alighnment, etc., and, if you're using the blade that came with the saw, it might be worth considering a new one, because they don't always put the best blades on them at the factory.

- BECKY ROJAS (Middletown, OH), 03/06/2019

It looks good, but would probably be better if you had a better blade. All the microchips along the edges of the miter tell me that the blade is vibrating as you cut, either as you cut down or as you bring the saw back up. A better trim blade won't do that. Course it could be the saw too. Cut slowly. Then after a cut, leave the saw down until it stops spinning. You should also be gluing those miters together. Titebond makes a moulding glue thats nice and thick and after you wipe it down with a damp rag, it works good as a filler. You should note that nailing the corners together will sometimes split the MDF. It doesn't like being nailed that direction. You are right that it will look good after it's painted.

- JEREMY WATSON (Hoffman Estates, IL), 02/08/2019

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