Thanks: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 15 of 26
Thread: Glue/Sawdust Mix vs Woodfiller
-
1st March 2021, 05:31 PM #1Member
- Join Date
- Jun 2013
- Location
- Sydney
- Posts
- 52
Glue/Sawdust Mix vs Woodfiller
Hi all
I've got a few joints that I misaligned some dowel holes with on the edge and face of a few boards.
So I've drilled out new holes, but of course, that leaves the old ones still there which will impact strength of the joint.
As I'd like to maximise glue surface contact for strength later, and I don't want to cut new pieces (walnut's expensive!), I thought about filling in the unnecessary holes with either some sawdust/glue or wood filler.
Which one will work best in this situation, or will they both be the same? I feel the glue mixture would get into the holes easier, but could also expand?
Cheers!
Adam
-
1st March 2021 05:31 PM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
1st March 2021, 06:24 PM #2.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,792
If you want strength I would use epoxy.
Some photos of the pieces might be useful to help determine what might work.
-
1st March 2021, 07:04 PM #3Member
- Join Date
- Jun 2013
- Location
- Sydney
- Posts
- 52
-
1st March 2021, 07:07 PM #4Member
- Join Date
- Jun 2013
- Location
- Sydney
- Posts
- 52
20210301_080239137_iOS.jpg20210301_080253760_iOS.jpg
here are a couple of pictures. You can see two holes here that I'd like to fill to maximise surface contact on the joint
-
1st March 2021, 07:20 PM #5GOLD MEMBER
- Join Date
- May 2011
- Location
- Albury
- Posts
- 3,036
The holes are hidden. Glue provides virtually no strength to a butt joint like this, so just glue your dowels in and clamp the joint until dry. My preferred method of joining on a butt joint like this would have been loose tenons, much more glue surface area.
-
1st March 2021, 07:27 PM #6Member
- Join Date
- Jun 2013
- Location
- Sydney
- Posts
- 52
Okay I'm confused... glue provides no strength?
So I can ignore the dowel holes and it won't make a difference? My thoughts were that that extra surface area would give a little bit of extra space for more glue. One or two (or more on other boards) holes would take away the total surface area for the glue to bond... I've got that wrong?
Total newb to this still. Loose tenon joinery (besides dowels ) is beyond my skill level.
What about through-dowels? I can potentially use Brass rods as through-dowels, will that increase the strength?
It will mean some more cutting and thicknessing which isn't what I was after, but it's an option.
-
1st March 2021, 07:39 PM #7.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,792
I mean just fill the holes with epoxy and then glue using whatever you were going to use. Filling the holes with a high strength material like epoxy would helps prevent the joint splitting along teh dowel line. However given there are only two (covered) holes I wouldn't worry about filling the holes and just glue the dowels and joint as per normal
-
1st March 2021, 07:40 PM #8Member
- Join Date
- Jun 2013
- Location
- Sydney
- Posts
- 52
-
1st March 2021, 07:46 PM #9.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,792
-
1st March 2021, 08:12 PM #10Member
- Join Date
- Jun 2013
- Location
- Sydney
- Posts
- 52
thanks!
This okay?
Gorilla 25ml Clear Epoxy Glue | Bunnings Warehouse
-
1st March 2021, 08:47 PM #11.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,792
-
1st March 2021, 09:01 PM #12Member
- Join Date
- Jun 2013
- Location
- Sydney
- Posts
- 52
-
1st March 2021, 09:06 PM #13Taking a break
- Join Date
- Aug 2008
- Location
- Melbourne
- Age
- 34
- Posts
- 6,127
End grain doesn't glue well in general, that's why we use dowels/tenons/dovetails/literally anything other than a plain butt join to provide side grain for the glue to stick to. As others have mentioned, those 2 holes will make zero practical difference to the strength of the joint.
The way we'd fill stuff ups like that at work (yeah, the pros do it too ) was just gluing a dowel in the hole with white glue and trimming it flush with the surface with a sharp chisel.
-
1st March 2021, 09:38 PM #14Member
- Join Date
- Jun 2013
- Location
- Sydney
- Posts
- 52
/facepalm. Why didn't I think of that?!?!?! That's such an easy solution, haha.
Okay new plan. I'll fill those with dowel, then glue the joint as normal (epoxy or titebond?). Then I'll add brass through-dowels for a feature and added strength?
Walnut + brass looks great, so it could work
-
1st March 2021, 09:48 PM #15Taking a break
- Join Date
- Aug 2008
- Location
- Melbourne
- Age
- 34
- Posts
- 6,127
Titebond is fine (and easier to clean up).
Brass pins do look pretty cool, just make sure you sand them flush by hand with a hardwood block wrapped in sandpaper; foam orbital sanding pads will "wrap" around the difference in hardness between the brass and timber and leave raised areas around each pin.
Similar Threads
-
sawdust and glue
By gord104 in forum GLUEReplies: 16Last Post: 30th September 2012, 07:47 PM -
Glue + Sawdust = Black Filler
By sw337 in forum WOODWORK - GENERALReplies: 4Last Post: 7th June 2011, 09:02 AM -
clear woodfiller
By Smokestack in forum WOODTURNING - GENERALReplies: 4Last Post: 12th October 2007, 06:43 AM