locoboy
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 posted on 18/9/03 at 09:21 AM |
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joining MDF
Dear all,
I have made my boot liner out of MDF, (dont panic it will be moisture sealed to prevent it from swelling up!)
i need to know the best method of joining 2 bits of MDF tofether at 90 degs, do i drill it then screw it?
Drill, screw, and glue (what type of glue)
Cheers
Colin
ATB
Locoboy
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ned
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| posted on 18/9/03 at 09:23 AM |
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drill, screw and glue; pva, woodglue works fine.
otherwise you could do a hidden dowel joint if you wanted it to look really good...
or metal angle brackets if you don't care or feel lazy.
Ned.
beware, I've got yellow skin
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MK9R
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| posted on 18/9/03 at 09:33 AM |
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makesure you pilot drill the piece you are screwing into as MDF splits otherwise. Now that you have made the box, why not make a fibre glass one?
[Edited on 18/9/03 by MK9R]
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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Simon
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| posted on 18/9/03 at 10:27 AM |
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Colin,
As MK9R says, why don't you make it in fibregass.
Be so simple.
Make a box with 5 sides (excluding top), at the dimensions you want the box interior to be, round off all the edges, grease, paint with gelcoat, lay
up matting, leave for a couple of day, and remove wood.
You'll need to make the wooden box dismantleable, to aid removal.
This way your gelcoated surface will be where you want it - inside the box, all your inner corners will be nicely rounded.
Be great, lighter than wood, waterproof and no chance it will rot.
Might do it meself . Reckon it will take about three hours (including tea and fag break or two)!
ATB
Simon
[Edited on 18/9/03 by Simon]
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locoboy
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| posted on 18/9/03 at 10:37 AM |
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MK9R
You have way too much enthusiasm for my liking! anyhoo i would have to make the box about 3mm smaller all round to make a GRP mould on the outside of
it other wise it wouldnt fit in the space, and guess what ............i can't be arsed with all that 
Ned,
Doweling is a bit OTT as i am lining it in material, so PVA and drill and Screw it is then.
Cheers
Colin
ATB
Locoboy
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locoboy
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| posted on 18/9/03 at 10:39 AM |
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simon,
are you putting the matting on the outside of the box or the inside?
Col
ATB
Locoboy
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GO
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| posted on 18/9/03 at 10:41 AM |
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Might have to try that as well, it'll be a good first experiment in the world of fibreglassing! I have a nasty suspicion that I'll be
having to make myself a huge scoop for the bonnet, best to make a start on a bit thats out of sight!
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Simon
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| posted on 18/9/03 at 10:45 AM |
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GO
Yeah, I'll be needing a scoop, but will make my bonnet (and scuttle for that matter) in the same way I've made my front arches - see
thread below, then sculpt a scoop and graft it on
http://forum.locostbuilders.co.uk/xmb/viewthread.php?tid=7515
ATB
Simon
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MK9R
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| posted on 18/9/03 at 10:46 AM |
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As its only the rear box, surely 3mm would make no difference. Fibreglassing is very good at relieving stress you know, its like stroking a dog
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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James
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| posted on 18/9/03 at 11:13 AM |
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quote:
Originally posted by ned
<snip>
otherwise you could do a hidden dowel joint if you wanted it to look really good...
<snip>
Ned.
Do proper Dove-tail joints!
Lovely...!
James
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David Jenkins
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| posted on 18/9/03 at 11:22 AM |
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quote:
Originally posted by MK9R
Fibreglassing is very good at relieving stress you know, its like stroking a dog
But not quite as smelly!
DJ
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timf
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| posted on 18/9/03 at 11:22 AM |
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quote:
Originally posted by James
quote:
Originally posted by ned
<snip>
otherwise you could do a hidden dowel joint if you wanted it to look really good...
<snip>
Ned.
Do proper Dove-tail joints!
Lovely...!
James
go modern use biscuit joinery
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A Badger
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| posted on 18/9/03 at 11:27 AM |
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Normal PVA "Wood Glue" is strong but not waterproof. Look for either a waterproof version, or use an expoxy type..
Andrew
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locoboy
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| posted on 18/9/03 at 11:55 AM |
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Think i will leave the animals and food out of this and just glue and screw!
MK9R, The box i have made fits in the space with about 1mm all round, so if i was to use this box as a mould then the GRP could only be 1mm thick at
max.
Now 1mm isnt sufficient to safely cary 24 cans of bitter along A/B Roads in a car with harsh suspension and a live axle at an average speed of 70 mph
without cracking and distributing its contents over the road. Better safe than sorry,.....................now where is that sheet of 5mm plate and the
welder
Beer is life.
col
ATB
Locoboy
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Wadders
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| posted on 18/9/03 at 05:12 PM |
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I have a six drawer toolbox, in my garage, and when full it must weigh about 30kg, i made it ten years ago from 6mm mdf, and its held together with
superglue, no joints, nails or screws. I dont usually have much faith in superglue, but on mdf its unbelievable, and instant. Try a butt joint youl be
amazed at the strength.
Al.i
P.S you can now get fully waterproof mdf, evev good for outdoor use.
]Originally posted by colmaccoll
Dear all,
I have made my boot liner out of MDF, (dont panic it will be moisture sealed to prevent it from swelling up!)
i need to know the best method of joining 2 bits of MDF tofether at 90 degs, do i drill it then screw it?
Drill, screw, and glue (what type of glue)
Cheers
Colin
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locoboy
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| posted on 19/9/03 at 08:56 AM |
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well lads,
last night was spent outside cutting measuring cutting, drilling, gluing (weatherproof PVA wood glue) and screwing, sanding and sealing.
This morning saw a quick cote of Marine grade primer then this afternoon will see the do or die moment of whether it all fits propperly!
Never worked with MDF before, pretty versatile stuff IMO.
Cheers for all the help,
will leave fiberglassing for another day!
Col
ATB
Locoboy
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Simon
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| posted on 19/9/03 at 11:14 AM |
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Colin,
Agree with you about MDF - great stuff!
ATB
Simon
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stephen_gusterson
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| posted on 19/9/03 at 11:23 AM |
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its ok for making bucks and stuff from, but if carol smillie came in my hous with it she could shove it. 
atb
steve
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robinbastd
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| posted on 19/9/03 at 10:08 PM |
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There can't be many of us that wouldn't want carol Smillie to come in our house.
As for mdf,it is nasty carcinogenic stuff and I always get a rash on my arms when I work with the stuff. 
Only a dead fish swims with the tide.
http://smuttygifts.com/
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stephen_gusterson
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| posted on 19/9/03 at 10:42 PM |
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I wasnt saying I had a problem with ms smillie.......just the mdf
she can help in the build anytime she likes.
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