nick205
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| posted on 25/9/03 at 11:27 AM |
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Plastic end caps for square tube?
Does anyone know where I can get some of those plastic end caps that push fit into 25x25mm square tube steel?
TIA
Nick
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MK Goldrush
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| posted on 25/9/03 at 11:29 AM |
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MK Engineering.
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AvonBelgium
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| posted on 25/9/03 at 11:35 AM |
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Normally you can find these in a general hardware store, these are used in general furniture constructions
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JoelP
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| posted on 25/9/03 at 12:21 PM |
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Are they water tight enough to be used on external ones? i was gonna post about end caps soon...
cant find the bit in the book, so i was gonna use 16gauge plates over the ends.
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nick205
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| posted on 25/9/03 at 01:51 PM |
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I was going to 'stick' them in using some silicone sealant to make sure they are watertight.
My MK chassis only needs 2 caps, so I reckon the hardware stores worth a look.
Cheers
Nick
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spy
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| posted on 25/9/03 at 10:18 PM |
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The end caps come in sizes suitable for light gauge and heavy gauge tubing. It's the light gauge stuff you need. You may be able to get them
from the same place where you bought your tubing from.
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nick205
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| posted on 26/9/03 at 07:22 AM |
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That'll be MK then!
I'm having a look through RS/Farnell at work to see if I can order some on the sly.
Cheers
Nick
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Simon
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| posted on 29/9/03 at 08:42 AM |
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Weld the holes up
Stronger than plastic and waterproof
ATB
Simon
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ned
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| posted on 29/9/03 at 09:37 AM |
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I welded mine up last week, easy job and is going to be better than a plastic thingy (IMHO) my pics will be updated soon...
Ned.
beware, I've got yellow skin
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nick205
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| posted on 29/9/03 at 01:26 PM |
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Not up for welding me!
Plus chassis is already painted with the floor riveted on next to the hole I want to fill.
Cheers
Nick
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Ben_Copeland
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| posted on 30/9/03 at 08:36 PM |
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i've used them........
Silicon Seal them in!
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ned
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| posted on 1/10/03 at 08:58 AM |
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Nick,
I'm kind of suprised they aren't supplied welded by MK....
Ned.
beware, I've got yellow skin
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Ben_Copeland
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| posted on 1/10/03 at 04:03 PM |
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Probably couldn't be bothered to do them 
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The Shootist
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| posted on 1/10/03 at 05:02 PM |
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Not Silicone....
Don't use silicone unless it is the type approved for use on electronics. Regular silicone uses a corrosive ingredient (Vinegar) that can cause
the tubes to rust.
I would suggest a metal cube (Aluminum) cut to fit tightly and epoxy (JB Weld if you can get it) in place. A hard insert will give better rigidity
than a soft plug.
An old trick from aircraft construction (tube & fabric) is to drill the tubes at the joints so all the tubes are inter-connected with all but one
tube capped, then a small amount of boiled linseed oil is poured into the frame, and the last opening sealed up. The linseed oil will coat the
interior of the frame tubes giving a fair level of corrosion resistance.
[Edited on 1/10/03 by The Shootist]
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blueshift
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| posted on 1/10/03 at 05:26 PM |
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how does the oil get around to coat all the tubes?
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Ben_Copeland
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| posted on 1/10/03 at 05:34 PM |
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probably turn it over and over in different directions lol
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GO
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| posted on 1/10/03 at 05:49 PM |
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maybe cos its boiling, so the linseed oil steam will coat the inner surfaces??
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nick205
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| posted on 2/10/03 at 07:50 AM |
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Lots of good ideas guys, but I think a plastic cap and some PU sealant that I used for the floor will suffice.
Cheers
Nick
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Ben_Copeland
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| posted on 2/10/03 at 08:32 AM |
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 thats what i did. 
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DaveFJ
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| posted on 2/10/03 at 08:44 AM |
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do not put aluminium blocks into steel tubes - never heard of dissimilair metal corrosion ?
[Edited on 2/10/03 by protofj]
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Ben_Copeland
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| posted on 2/10/03 at 08:48 AM |
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yeh, if your going to make u something in metal... use steel and weld it in, i did this most places.... some places just have plastic plugs
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DaveFJ
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| posted on 3/11/03 at 01:34 PM |
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Nick
Did you ever find a supplier for your plastic end caps ?
If so how much did they put you back ?
I'v just been checking out RS components and they are offering them @ about £6 for 12 plus vat and delivery....
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Hellfire
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| posted on 4/11/03 at 03:38 AM |
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Plastic Bungs
I'd be surprised if MK forgot to put them in...
... IMHO, most people tend to forget to take them out before they send the chassis to be plastic coated and they burn up!
Regarding oil, steel is porous and it will eventually seep through the section, causing the caoting to fall off!
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DaveFJ
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| posted on 4/11/03 at 08:59 AM |
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Talked to MK yetserday and they cannot supply them......
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givemethebighammer
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| posted on 4/11/03 at 10:10 PM |
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Nick, I think I have a bag of the said 25mm x 25mm plugs somewhere in the garage. Bought them from a guy who puts together warehouse shelving.
How many do you need, drop me your address on U2U and I send them at the weekend if I can find them.
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