Here's my drawers. The frame is out of qubelok aluminium and the rest is 16mm mdf. It took 3 weekends to build working both days for around 5-6 hours so about 30-35hrs all up. Total cost was probably around $500-$600. Some advice for anyone thinking of doing their own, plan everything well. I spent about a week and a half just planning drawing sketches and counting up fixings etc. Don't buy anything from bunnings except maybe carpet and kwik grip, they are extremely expensive compared to wholesalers. I got the ally from carpal where it was $18 for 6.5m at bunnings it was $18 for 3m. I got all my fixings from united fasteners and it cost a total of $38. I am lucky enough to work for a company that has an account so got about 70% off most stuff there but would still be cheaper than bunnings if I paid full price. If you can get a mate who has an account at a place similar and you can save a fair bit. I stupidly didn't get enough t-nuts and had to get more from bunnings cos it was Sunday. Cost me $30 for 20 t-nuts and bolts to suit. Considering I bought about 200 different fixings from united fasteners for $38 bunnings really are pretty pricey for some stuff.
For the slides I just used bearings and some box section. Got the bearings from a wholesaler too for $1 each. I used nutserts to fix everything to the ally. Didn't want to use tek screws cos I reckon they'd end up stripping cos the ally is fairly soft.
I did a 12v panel as well. Just tapped in to the cable that goes to the Anderson plug on the back for a trailer and ran the cable through a grommet located at the rear left under the tail lights which gets you into the panel on the inside left of the boot. Put a fuse holder in and got a volt meter some switches and a couple of cig outlets of eBay and mounted them on some 3mm mdf. Also put in some led's that were a freebie from work. Flick em on in the dark and it's like daylight in the back.
When I started I was most concerned about the carpeting but it was actually pretty easy once I found the best way for doing the corners. I used kwik grip after reading that it's the best way to go. I used the spray for inside the drawers but only cos I ran out of the other stuff and had a can already. Will see how it holds up seems ok but not as strong as the stuff out of the tin.
All in all I'm pretty happy with them. They look real neat and are strong as. The only thing that perhaps isn't perfect is the drawers are just a tad small but only a tad. Can still fit plenty in them.
Comments and questions welcome.