• We invite you to join UKWorkshop.
    Members can turn off viewing Ads!

Plywood corner joint advice.

UKworkshop.co.uk

Help Support UKworkshop.co.uk:

roadrunner45

Established Member
Joined
21 Feb 2021
Messages
24
Reaction score
3
Location
Wimborne
Hello All,

I am trying to make a wall mounted bike rack from some 18mm thk plywood offcuts and would like to create a mortise and tenon joint construction , the reason for this is to make a strong bond for the rack.
Below is an image i am trying to replicate , i am hoping for some images for me to follow to achieve this joint and willing to learn the technique for future projects.

Any help/advice would be appreciated.

Thank you.
 

Attachments

Cabinetman

Established Member
Joined
5 Jan 2017
Messages
2,379
Reaction score
1,245
Location
lincolnshire Wolds
Not sure that I would consider using a mortice and tenon joint in that situation, perhaps as it is but add some chunky bits of pine in the corners. The leverage on that is going to be quite high, I think I would take the backboard further so that you could put chunky bits both sides of each arm. This would also have a bonus effect of being able to screw into the wall each end and in the middle. Ian
 

Jameshow

Established Member
Joined
4 Oct 2020
Messages
1,593
Reaction score
729
Location
Bradford
I would run a 200mm run of ply along the wall then have your ply arms notched say 6mm into this then run another 200mm length of ply flat on the top screwed into both the arms and the wall board.

This way the ply along the top is taking the strain and serves as a useful shelf for helmets and shoes?

Cheers James
 

recipio

Established Member
Joined
16 Jun 2008
Messages
393
Reaction score
115
Location
ireland
Baltic ply is hard to work by hand as it tends to crumble even with sharp tools. Loose tenons are the answer but you need pricy machines like the Domino or a router. I would suggest using 10 mm dowels either as a hidden joint or simply run in from the side arms as in the photo.
 

dzj

Established Member
Joined
29 Jan 2013
Messages
1,287
Reaction score
610
Location
Serbia
Google 'wooden wall mounted bike rack' images. They have a lot of ideas that circumvent the leverage problem.
 

Cabinetman

Established Member
Joined
5 Jan 2017
Messages
2,379
Reaction score
1,245
Location
lincolnshire Wolds
I would run a 200mm run of ply along the wall then have your ply arms notched say 6mm into this then run another 200mm length of ply flat on the top screwed into both the arms and the wall board.

This way the ply along the top is taking the strain and serves as a useful shelf for helmets and shoes?

Cheers James
Trouble with that though James is that you would be screwing down into the edge of the plywood.
 

pulleyt

Established Member
Joined
24 May 2014
Messages
139
Reaction score
214
Location
Nottingham
I would suggest using 10 mm dowels either as a hidden joint or simply run in from the side arms as in the photo.
+1 for dowels. If I were doing this I would make it up with basic butt joints as in your photo i.e side panels butting up to the edges of the back panel. Once that joint had dried I'd then reinforce the butt joints with dowels.
 

Cabinetman

Established Member
Joined
5 Jan 2017
Messages
2,379
Reaction score
1,245
Location
lincolnshire Wolds
+1 for dowels. If I were doing this I would make it up with basic butt joints as in your photo i.e side panels butting up to the edges of the back panel. Once that joint had dried I'd then reinforce the butt joints with dowels.
Sorry, I have to disagree, I’m confident that would tear the front face off the backboard the first time that somebody wasn’t too careful.
 

Jones

Established Member
Joined
5 Oct 2021
Messages
83
Reaction score
37
Location
Gwynedd
A couple of large dovetails would do it. Dovetails are designed to resist the racking force you will have . Otherwise just reinforce the join will a fillet glued and screwed in. You won't get furniture grade dovetails in ply but the mechanics will still work.
 

dephill

Established Member
UKW Supporter
Joined
9 Feb 2021
Messages
26
Reaction score
18
Location
High Wycombe
I think ply is plenty strong enough for this job, at least 18mm birch ply for the backboard, glued and maybe a couple pins till dry. Then two or three 8mm dowels inserted from the outside, possibly biased slightly towards the wall to provide a little more meat at the front. Also the length of the joined area would make a massive difference - the bracket in the picture looks to be 3 or 4 inches high. If you made it closer to six or eight the glue area and dowels would easily be sufficient.
 

Latest posts

Top