Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 | 3

mdf

2223 posts

Uber Geek
+1 received by user: 684

Trusted
Subscriber

  # 1717728 9-Feb-2017 15:05
3 people support this post
Send private message

Glue and screw would probably be enough IMHO. The concern with screwing into the grain isn't the shear force (i.e. the weight of the shelf pressing down perpendicular to the screws), it is the pull force parallel to the screws. You won't get much pull force parallel to the screws, since the screws along the other edge/across the grain will resist that force.

 

Just don't overtighten.

 

Given you've got a few shelves and it would be worth the investment in making a jig/guide, cam fasteners could be another option. But they're ugly if you can see them.


6615 posts

Uber Geek
+1 received by user: 2293
Inactive user


  # 1717741 9-Feb-2017 15:16
Send private message

ubergeeknz:

 

I'd probably put small battens underneath and screw into the door and the bottom of each shelf.

 

 

 

 

Since its a high unit this may have a negative visual impact.

 

 


 
 
 
 


3344 posts

Uber Geek
+1 received by user: 1089

Trusted
Vocus

  # 1717742 9-Feb-2017 15:18
Send private message

TimA:

 

ubergeeknz:

 

I'd probably put small battens underneath and screw into the door and the bottom of each shelf.

 

 

 

 

Since its a high unit this may have a negative visual impact.

 

 

 

 

True that.  As you say screw and glue from the back should do the trick just fine.




652 posts

Ultimate Geek
+1 received by user: 163


  # 1717743 9-Feb-2017 15:18
Send private message

TimA:

 

What a cool little project, Is this an operating door to hide shelves or decorative shelving.

 

How much weight are you holding on the shelves?

 

Are you going for the most discrete look with floating shelves?

 

 

 

 

It's a decorative shelving using a door, with inspiration from Pinterest. I have no idea about the what object will be placed on it. I am going for the 'discrete look' plus LED strip lighting recessed into the the under underside of the shelves. 

 

 






6615 posts

Uber Geek
+1 received by user: 2293
Inactive user


  # 1717744 9-Feb-2017 15:21
Send private message

mdf:

 

Glue and screw would probably be enough IMHO. The concern with screwing into the grain isn't the shear force (i.e. the weight of the shelf pressing down perpendicular to the screws), it is the pull force parallel to the screws. You won't get much pull force parallel to the screws, since the screws along the other edge/across the grain will resist that force.

 

Just don't overtighten.

 

Given you've got a few shelves and it would be worth the investment in making a jig/guide, cam fasteners could be another option. But they're ugly if you can see them.

 

 

 

 

Second to that, Use a foam expanding glue and clamp your shelves down really tight so they cant move when the glue cures. Will fill all the gaps and be secure. Then drill pilot holes and screw it off.
My father used to import a product called Woodbond and that was the best for this. Could hold a shelf without screws. Withstood heat and could cure submerged. Metal/wood/stainless.. Shame he doesnt anymore.

 

 


5376 posts

Uber Geek
+1 received by user: 2201


  # 1717746 9-Feb-2017 15:26
One person supports this post
Send private message

TimA:

 

mdf:

 

Glue and screw would probably be enough IMHO. The concern with screwing into the grain isn't the shear force (i.e. the weight of the shelf pressing down perpendicular to the screws), it is the pull force parallel to the screws. You won't get much pull force parallel to the screws, since the screws along the other edge/across the grain will resist that force.

 

Just don't overtighten.

 

Given you've got a few shelves and it would be worth the investment in making a jig/guide, cam fasteners could be another option. But they're ugly if you can see them.

 

 

 

 

Second to that, Use a foam expanding glue and clamp your shelves down really tight so they cant move when the glue cures. Will fill all the gaps and be secure. Then drill pilot holes and screw it off.
My father used to import a product called Woodbond and that was the best for this. Could hold a shelf without screws. Withstood heat and could cure submerged. Metal/wood/stainless.. Shame he doesnt anymore.

 

 

 

 

3rd to that ...





Mike

Hmm, what to write...
1010 posts

Uber Geek
+1 received by user: 522

Trusted
Subscriber

  # 1717786 9-Feb-2017 16:53
Send private message

If you want to use the dowel method but don't have any hardwood then knead-it (any version) will wok perfectly. Mix it, press it into the hole wait 5 min, and drill the pilot hole. if you feel in a engineering mood you can even drill and tap it and use machine screws but that is going a bit far.

 

I use knead-it when trying to screw into chipboard. I drill a larger hole, undercut it so it has a larger diameter at the bottom, plug it with kneed it, wait 5 min and drill and screw into it.   You can buy the proper thing at carters but this method is cheaper.





Matthew


6615 posts

Uber Geek
+1 received by user: 2293
Inactive user


  # 1717801 9-Feb-2017 17:44
Send private message

jimbob79:

 

TimA:

 

What a cool little project, Is this an operating door to hide shelves or decorative shelving.

 

How much weight are you holding on the shelves?

 

Are you going for the most discrete look with floating shelves?

 

 

 

 

It's a decorative shelving using a door, with inspiration from Pinterest. I have no idea about the what object will be placed on it. I am going for the 'discrete look' plus LED strip lighting recessed into the the under underside of the shelves. 

 

 

 

 

 

 

Ahh, That looks excellent! I think your going to achieve this look well!

 

Give its supported on a 90 degree angle it will have strong shelves, Glueing and screwing will have this solid as a rock.
Make sure before it all gets glued and screwed together, put your draw wire holes in. Its very hard to get a drill chuck into a corner of a shelf to drill from the inside out unless you spend $1500 on this.

 

I see you made a little lip under the shelf to discretely hide the LED. Just make sure the top shelf isnt going to strike you in the eyes if your a little under the shelf. 

 

Where are you going to hide the driver? At the top or the bottom? 


2777 posts

Uber Geek
+1 received by user: 461


  # 1717831 9-Feb-2017 18:42
Send private message

As long as the screws are long enough I don't even think glue would be necessary unless the shelves were actually the secret ladder to a hiding place in the attic. With enough engagement you'd wind the head off before the thread would strip unless you had drilled too big a pilot hole.

6615 posts

Uber Geek
+1 received by user: 2293
Inactive user


  # 1717838 9-Feb-2017 18:55
Send private message

Bung: As long as the screws are long enough I don't even think glue would be necessary unless the shelves were actually the secret ladder to a hiding place in the attic. With enough engagement you'd wind the head off before the thread would strip unless you had drilled too big a pilot hole.

 

 

 

I wouldnt go that far as to say that you will snap the head off! Maybe if it was bone dry hard wood.
I had a square drive 150MM extension and left a few screws in the middle of a log proving a point haha :)

 

 

 

 


mdf

2223 posts

Uber Geek
+1 received by user: 684

Trusted
Subscriber

  # 1717851 9-Feb-2017 19:25
Send private message

TimA:

 

Ahh, That looks excellent! I think your going to achieve this look well!

 

Give its supported on a 90 degree angle it will have strong shelves, Glueing and screwing will have this solid as a rock.
Make sure before it all gets glued and screwed together, put your draw wire holes in. Its very hard to get a drill chuck into a corner of a shelf to drill from the inside out unless you spend $1500 on this.

 

I see you made a little lip under the shelf to discretely hide the LED. Just make sure the top shelf isnt going to strike you in the eyes if your a little under the shelf. 

 

Where are you going to hide the driver? At the top or the bottom? 

 

 

@TimA you need one of these bad boys. I don't use mine all that often, but when you really need it there's no substitute. Even my pro builder mates go a bit weak at the knees when I pull it out for that particularly tight job. Bunnings has things that are similar in principle but three times the price.


1940 posts

Uber Geek
+1 received by user: 508

Lifetime subscriber

  # 1717900 9-Feb-2017 20:15
Send private message

jimbob79:

 

I saw this simple trick of screwing into end grain timber and it asks for 'hardwood' plug/dowel. Looking at the local sources Mitre10/Bunnings that they seam to only sell pine dowel rods.

 

You can buy small hardwood dowels at the hardware stores but they are up to 12mm/0.5" diameter and about 25-40mm/1-1.5" length, e.g. https://www.bunnings.co.nz/pg-professional-dowel-fluted-10mm-40pk_p00139142

 

I use them all the time mainly for repairs. On larger items you just have to use more. I gave up on screws because they don't sand, often need to be covered or filled, are relatively inflexible so they get loose if flexed particularly in pine furniture, cause splits to form, and they break wood. My dining room chairs are the greatest challenge - they have sliders on the legs so seated weight is helping to push the legs apart making them susceptible to breaking under unexpected loads. Dowels have proved to be much more resilient as I haven't had to replace any even when people in the seats have tipped them over heavily.




652 posts

Ultimate Geek
+1 received by user: 163


  # 1717933 9-Feb-2017 21:14
Send private message

TimA:

 

jimbob79:

 

TimA:

 

What a cool little project, Is this an operating door to hide shelves or decorative shelving.

 

How much weight are you holding on the shelves?

 

Are you going for the most discrete look with floating shelves?

 

 

 

 

It's a decorative shelving using a door, with inspiration from Pinterest. I have no idea about the what object will be placed on it. I am going for the 'discrete look' plus LED strip lighting recessed into the the under underside of the shelves. 

 

 

 

 

 

 

Ahh, That looks excellent! I think your going to achieve this look well!

 

Give its supported on a 90 degree angle it will have strong shelves, Glueing and screwing will have this solid as a rock.
Make sure before it all gets glued and screwed together, put your draw wire holes in. Its very hard to get a drill chuck into a corner of a shelf to drill from the inside out unless you spend $1500 on this.

 

I see you made a little lip under the shelf to discretely hide the LED. Just make sure the top shelf isnt going to strike you in the eyes if your a little under the shelf. 

 

Where are you going to hide the driver? At the top or the bottom? 

 

 

I hope I can answer your questions. I got some LED Strip Diffusers from BangGood (see image below) which I hope will will solve the issue of light strike/glare also I wireless remote which has 'Dimmer Control' function which should also help.

 

I was going to have the power switching supply stealth at the top of the shelving unit but I had a change of mind and now going to have it on the floor since it's 'double insulated' seal unit (CE standard). The DC 12V wiring will be routed through a channel on the back side connecting each strip in a parallel/daisy chain configuration.

 

Click to see full size

 

 

 

12V RF Wireless Remote Switch Controller Dimmer for Mini LED Strip Light GM

 

Also here here is a quick peek at how it will look like.

 

Click to see full size






1014 posts

Uber Geek
+1 received by user: 572
Inactive user


  # 1717983 9-Feb-2017 22:30
Send private message

I'd have just put rebates in the face of the door and polyurethane the shelf in.


4431 posts

Uber Geek
+1 received by user: 1356
Inactive user


  # 1717987 9-Feb-2017 22:37
Send private message

jimbob79:

 

I saw this simple trick of screwing into end grain timber and it asks for 'hardwood' plug/dowel. Looking at the local sources Mitre10/Bunnings that they seam to only sell pine dowel rods. Do you think pine will work for this trick????

 

 

 

 

 

 

Ref: http://woodgears.ca/shop-tricks/endgrain_screw.html

 

 

 

 

I cant see why pine wouldn't work... the grain is going opposite in the plug and would have no room to expand if it was tight in the hole (asked my boss, who is a furniture polisher and has seen lots of fixings in his years in the trade, and he agreed).


1 | 2 | 3
View this topic in a long page with up to 500 replies per page Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

WLG-X festival to celebrate creativity and innovation
Posted 22-May-2019 17:53


HPE to acquire supercomputing leader Cray
Posted 20-May-2019 11:07


Techweek starting around NZ today
Posted 20-May-2019 09:52


Porirua City Council first to adopt new council software solution Datascape
Posted 15-May-2019 12:00


New survey provides insight into schools' technology challenges and plans
Posted 15-May-2019 09:30


Apple Music now available on Alexa devices in Australia and New Zealand
Posted 15-May-2019 09:11


Make a stand against cyberbullying this Pink Shirt Day
Posted 14-May-2019 20:23


Samsung first TV manufacturer to launch the Apple TV App and Airplay 2
Posted 14-May-2019 20:11


Vodafone New Zealand sold
Posted 14-May-2019 07:25


Kordia boosts cloud performance with locally-hosted Microsoft Azure ExpressRoute
Posted 8-May-2019 10:25


Microsoft Azure ExpressRoute in New Zealand opens up faster, more secure internet for Kiwi businesses
Posted 8-May-2019 09:39


Vocus Communications to deliver Microsoft Azure Cloud Solutions through Azure ExpressRoute
Posted 8-May-2019 09:25


Independent NZ feature film #statusPending to premiere during WLG-X
Posted 6-May-2019 22:13


The ultimate dog photoshoot with Nokia 9 PureView #ForgottenDogsofInstagram
Posted 6-May-2019 09:41


Nokia 9 PureView available in New Zealand
Posted 6-May-2019 09:06



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.