R2D2 Posted November 20, 2019 Share Posted November 20, 2019 Looking forward to see how you benders get on. Sorry, couldn't resist! David - mdf is fine if things kept nice and dry, but even MR MDF puffs up like a mo-f when damp. Looks like you sealed it up though which will help. Link to comment Share on other sites More sharing options...
Phill Posted November 20, 2019 Author Share Posted November 20, 2019 31 minutes ago, Type911 said: Let me see what we can do on a IB group session. Just a group buy please Matt........... Link to comment Share on other sites More sharing options...
Type911 Posted November 20, 2019 Share Posted November 20, 2019 Oh, a group buy? Sorry, had the wrong end of that stick again........................................happy to do this but only if the management are ok with it. Link to comment Share on other sites More sharing options...
Phill Posted November 20, 2019 Author Share Posted November 20, 2019 @Von TwinzigTwinzig @mean in green Link to comment Share on other sites More sharing options...
mean in green Posted November 21, 2019 Share Posted November 21, 2019 Best asking the Sheriff ref. promotional content. Link to comment Share on other sites More sharing options...
Type911 Posted November 21, 2019 Share Posted November 21, 2019 How many people what be interested? Dont want to bother JG if it aint gonna fly! Link to comment Share on other sites More sharing options...
Phill Posted November 21, 2019 Author Share Posted November 21, 2019 Me Link to comment Share on other sites More sharing options...
Beaky Posted November 21, 2019 Share Posted November 21, 2019 I'd be in Link to comment Share on other sites More sharing options...
Type911 Posted November 21, 2019 Share Posted November 21, 2019 Need to get 10 pieces minimum, will do in pairs or singles. Link to comment Share on other sites More sharing options...
Phill Posted November 24, 2019 Author Share Posted November 24, 2019 (edited) Picked up a piece of 6mm plywood. Had a go at kerf cutting and steaming. Got the bend but because the ply was poor quality it fell part. £1.50 and some time wasted. I'm sacking trying to bend ply, too time consuming. ABS seems a bit expensive to buy in small pieces so I am going to have a look at Foamex and possibly HDPE. I will get an offcut of Foamex from a sign maker and see how strong it is and how easy to bend. I expect, after I have wasted some more money and lots of time, I will end up buying one of Matt's ABS boards. Still, got to try......... Edited November 24, 2019 by Phill Link to comment Share on other sites More sharing options...
mean in green Posted November 24, 2019 Share Posted November 24, 2019 Foamex isn’t much stronger than polystyrene is it? Acrylic can be heated with lamps and easily formed, but I think plywood and a steam box still likely to be the preferred route. Link to comment Share on other sites More sharing options...
rich73 Posted November 24, 2019 Share Posted November 24, 2019 Hi There, I can try bending some Foamex tomorrow and let you know how it goes. I've got some leftover 5mm which seems about as rigid as MDF of equivalent thickness without the moisture issues. I used 2mm thick aluminium sheet to replace my foot boards which is really easy to work with and rigid enough. I would have thought that 5mm Foamex would be fine behind the pedals where all its doing if holing up the carpet but may be not be strong enough on the passenger side especially if the passenger starts braking for you. Rich Link to comment Share on other sites More sharing options...
rich73 Posted November 24, 2019 Share Posted November 24, 2019 Heat gun then ran under cold water to set it. Link to comment Share on other sites More sharing options...
mascot100 Posted November 24, 2019 Share Posted November 24, 2019 I fabricated a left hand drive drivers side one out of ply and aluminium - just bent the ally and bonded( or maybe pop riveted) it to the ply at the bend - its lasted for five years. Link to comment Share on other sites More sharing options...
Phill Posted November 24, 2019 Author Share Posted November 24, 2019 1 hour ago, rich73 said: Heat gun then ran under cold water to set it. Looks perfect. Is it as rigid as the ply? Link to comment Share on other sites More sharing options...
rich73 Posted November 25, 2019 Share Posted November 25, 2019 On 11/24/2019 at 5:55 PM, Phill said: Looks perfect. Is it as rigid as the ply? No don't think so, the aluminium is though. You could always add strengthening to the back of the Foamex if it wasn't rigid enough. Link to comment Share on other sites More sharing options...
Phill Posted November 25, 2019 Author Share Posted November 25, 2019 18 minutes ago, rich73 said: No don't think so, the aluminium is though. You could always add strengthening to the back of the Foamex if it wasn't rigid enough. So, 2mm Ali is strong enough? What about weight? Heavier, lighter than ply? Ali is easy to shape and cut. Link to comment Share on other sites More sharing options...
rich73 Posted November 26, 2019 Share Posted November 26, 2019 Hi there, 820g as pictured. Definitely stiff enough. Link to comment Share on other sites More sharing options...
Busybee Posted November 26, 2019 Share Posted November 26, 2019 Has to be lighter than ply at that weight? Link to comment Share on other sites More sharing options...
Phill Posted November 26, 2019 Author Share Posted November 26, 2019 24 minutes ago, Busybee said: Has to be lighter than ply at that weight? I'm not sure. I will weigh my passenger one this evening. The ply seems very light. Link to comment Share on other sites More sharing options...
Phill Posted November 26, 2019 Author Share Posted November 26, 2019 Plywood passenger board 550g. I am surprised the difference is so big. Link to comment Share on other sites More sharing options...
Type911 Posted November 26, 2019 Share Posted November 26, 2019 Abs is 580g 30g ........maybe get your legs waxed to compensate? Link to comment Share on other sites More sharing options...
Phill Posted November 26, 2019 Author Share Posted November 26, 2019 5 minutes ago, Type911 said: Abs is 580g 30g ........maybe get your legs waxed to compensate? Had my haircut today, that should do it and I hoovered out under the board, that definitely did it. Link to comment Share on other sites More sharing options...
WP0ZZZ Posted December 3, 2019 Share Posted December 3, 2019 Just for fun I calculated the bending stiffness of two flat panels of equal weight: one made out of plywood and one made of aluminium. A 3-ply birch panel (3.6 mm thickness) oriented in the right direction has about 11 times the bending stiffness of a flat aluminium panel of the same weight. However, in the perpendicular direction (i.e. with the bending load not aligned with the fibres on the "skins") the plywood panel is about 30% less stiff than the aluminium panel of the same weight. A 5-ply birch panel (6.4 mm thickness), however, is about 11 times stiffer in the strong direction and about 4 times stiffer in the weak direction. It would be interesting to compare those numbers with a dimple died aluminium panel. I guess aluminium would become much more competitive. Link to comment Share on other sites More sharing options...
Type911 Posted December 3, 2019 Share Posted December 3, 2019 I do other things for fun............ Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now