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Tech warning - DIY your own drawers

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rockcrawler31

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Post Thu Feb 25, 2016 8:35 pm

Tech warning - DIY your own drawers

I built these for my brother in law. Thought i'd share the process with you all. I won't be able to describe all the steps so if you have any questions feel free to ask.

I designed them on CAD taking all the best design cues from commercial units. Yes i plagiarised the hell out of them, i freely admit it. If you download a program called Draftsight it's free and has all the functionality that autocad has. Save the file as a DXF as that's what your laser cutter needs. These aren't the cheapest way of DIY'ing drawers but they're solid, work well and still a fraction of the cost of buying them. We have about 850 in materials in these, mainly because they're over the magic 1200mm mark that a standard sheet is wide.

If you take anything away from this, it's that you MUST spend a bit of time in the design phase. Once the parts are cut and bent there's no going back if it's wrong, you're in the hole for cash. So with that in mind, pay attention to -

1. Parts interference and clearance. Make sure that ALL components will clear others through out the range of motion. That includes sheet metal, fasteners, carpeting, latch mechanisms.

2. take into account material thicknesses when bending. If a hole is 10mm from the edge of a 1.5mm sheet, and another 10mm from a fold line, then once folded the hole will be 11.5mm from the outside edge of the fold line.

Parts and materials ready for assembly
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My end plates are rivetted to the body of the drawers. The top edge has a 180 degree fold called either a "fold and crush" or a "safety edge. The tops of the drawers have a double 10mm return to provide stiffness

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http://www.populationparty.org.au/
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rockcrawler31

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Post Thu Feb 25, 2016 8:40 pm

Re: Tech warning - DIY your own drawers

This is what happens when you don't take material thickness into account. A quick hit with a burr fixed this

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I rarely use cheap chinese stuff when building but for the bearings i do. They're not seeing anywhere near their rated load and rotating minimal times over the life of the drawers. At half the price it made sense. The narrow OD washers are to keep the arbor off the wall without binding up the race.

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http://www.populationparty.org.au/
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rockcrawler31

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Post Thu Feb 25, 2016 8:49 pm

Re: Tech warning - DIY your own drawers

They're not in this pic, but the lid is fixed with what's called a "panel clip". It's a C shaped clip with a hole on one side and a threaded hole the other. They allow you to screw in without access to the other side and they'll wiggle or move a bit if the hole in the timber isn't quite aligned right. Note the holes in the front trim plate for the latch tongues

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The holes in the lid are countersunk to allow the screws to sit flush. To mark out the holes invert the frame on to the timber and use a pen to scribe the holes on to the timber then drill them.

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The carpet is glued down on both timber and steel surfaces but also a cheap air stapler is used to secure the carpet on the timber. Make sure you get a decent sized tin of glue as the carpet will eat it up like it's tictacs.

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http://www.populationparty.org.au/
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rockcrawler31

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Post Thu Feb 25, 2016 8:57 pm

Re: Tech warning - DIY your own drawers

Last post. I hope this has helped someone or encouraged them to have a go

Spring loaded handles will stop rattles

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The RHS tube is bolted to the drawers and washers are added between the bearings and the walls to shim them out and take up any gaps to the drawer bodies.

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All that's left is to custom fit the wings and wing covers, and an alloy trim strip to the front.

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Here's what happens when you don't glue ALL the surface area. Make sure you use glue everywhere that will be seen.

Image
http://www.populationparty.org.au/
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toaddog

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Post Thu Feb 25, 2016 11:13 pm

Re: Tech warning - DIY your own drawers

Nice work.
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80's_delirious

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Post Fri Feb 26, 2016 7:53 am

Re: Tech warning - DIY your own drawers

Nice work, and bomb proof as always Milo!
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CRUZAAMAD

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Post Sat Mar 19, 2016 8:38 pm

Re: Tech warning - DIY your own drawers

rockcrawler31 wrote:Last post. I hope this has helped someone or encouraged them to have a go

Spring loaded handles will stop rattles

Image

The RHS tube is bolted to the drawers and washers are added between the bearings and the walls to shim them out and take up any gaps to the drawer bodies.

Image

All that's left is to custom fit the wings and wing covers, and an alloy trim strip to the front.


DROOL DROOL DROOL DROOL DROOL

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Here's what happens when you don't glue ALL the surface area. Make sure you use glue everywhere that will be seen.

Image
AUSTRALIA
WORTH LOOKING AT WORTH LOOKING AFTER
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rockcrawler31

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Post Sun Mar 20, 2016 7:33 pm

Re: Tech warning - DIY your own drawers

Thanks cruza, nothing beats seeing something come together from a drawing to the finished product
http://www.populationparty.org.au/
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udlman

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Post Mon Mar 21, 2016 8:01 pm

Re: Tech warning - DIY your own drawers

What did you use on the tail of the bolts on the other side of the center spine?
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rockcrawler31

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Post Tue Mar 22, 2016 11:16 am

Re: Tech warning - DIY your own drawers

udlman wrote:What did you use on the tail of the bolts on the other side of the center spine?



There's a bearing/washer/nut assembly both sides. You have to choose your bolt length and nut dimensions carefully so as not to foul the drawer body
http://www.populationparty.org.au/
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udlman

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Post Wed Mar 23, 2016 1:57 pm

Re: Tech warning - DIY your own drawers

rockcrawler31 wrote:
udlman wrote:What did you use on the tail of the bolts on the other side of the center spine?



There's a bearing/washer/nut assembly both sides. You have to choose your bolt length and nut dimensions carefully so as not to foul the drawer body


That's what I thought. Must have use 1/2 nuts and loctite as nylocs would have been too thick.
Rule #1 - Never argue with an idiot.
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bru21

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Post Mon Apr 04, 2016 6:50 pm

Re: Tech warning - DIY your own drawers

Awesome work mate! Well done.
We use these guys; https://trailerpartsdirect.com.au/shop/ ... er-system/
double the price of yours though!
ADHD Racing would like to thank
Mrs Bru @ Sunshine Coast Developmental Physiotherapy - www.scdphysio.com.au , Ryano @ Fourbys www.generaltire.com.au Blitzkrieg Motorsport

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