02GF74
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| posted on 20/12/12 at 10:54 AM |
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OT - tool to remove cap
How would you go about making a tool to remove this cap without damaging it?
overall diameter is 28 mm, recess is 14 mm.
Cover recess with cling film and then pack with epoxy resin/chopped glass fiber mat?
now if only I had a CNC or 3D printer....
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liam.mccaffrey
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| posted on 20/12/12 at 11:35 AM |
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I reckon you could vabricate somthing from 5 bits of bar welded on to a central pin.
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Slater
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| posted on 20/12/12 at 11:41 AM |
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screwdriver with some duct tape wrapped round the end to avoid metal bits contacting each other.........Locost style......
Why do they call Port Harcourt "The Garden City"?...... Becauase they can't spell Stramash.
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MikeR
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| posted on 20/12/12 at 11:41 AM |
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figure out the size of the holes, cut down some bolts. Weld bolts onto bar. twist bar.
Technically you'd only need two bolts.
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maccmike
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| posted on 20/12/12 at 11:42 AM |
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round bar equal diameter to of the centre of cap.
5 small round bar equal to the 5 outer areas.
bit of welding and grinding.
jobs a good'n
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tegwin
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| posted on 20/12/12 at 11:43 AM |
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I have used large hex keys before with a piece of duct tape for padding on similar caps.
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HowardB
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| posted on 20/12/12 at 11:46 AM |
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I have used the two screwdriver technique,... one in one slot as a pivot, the other in across the cap as a lever. It would be possible to replicate as
a bar with just two pins, or three if you were worried. Not all 5 are required.
hth
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again  and goes zoom)
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02GF74
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| posted on 20/12/12 at 11:51 AM |
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thanks - good job i asked - 5 aluminium pins held in some fashion would be the easiest
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Jimfin
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| posted on 20/12/12 at 12:44 PM |
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Tool for changing wheels on the angle grinder perhaps, difficult to gauge the dimensions from the photo, but could also be made to size with a bar an
couple of bolts..
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matt_gsxr
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| posted on 20/12/12 at 01:41 PM |
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What about making a tool out of that plastic that you can melt in boiling water?
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trextr7monkey
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| posted on 20/12/12 at 02:16 PM |
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known a s polymorph 
I think Iwould just drill hole centres througha bit of flat bar and drop some bolts through - either put a nut on back or a spot of weld on top, how
tight are they?
Have a cnc machine that works with wood and pladstic (but not metal on a big scale0
ATB
mIKE
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Our most recent pics are here:
http://s129.photobucket.com/albums/p211/trextr7monkey/
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theprisioner
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| posted on 20/12/12 at 03:04 PM |
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CNC
Digitise the shape using TuboCAD or AutoCAD then cut it out of the solid, simples!
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nick205
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| posted on 20/12/12 at 04:00 PM |
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Looks a reasonably expensive part - is it for cycle brakes?
How much is the proper tool, might be cheaper in the long run to preserve the part. Don't foget you've got to do it back up again too.
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MikeRJ
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| posted on 20/12/12 at 06:24 PM |
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quote:
Originally posted by 02GF74
thanks - good job i asked - 5 aluminium pins held in some fashion would be the easiest
Work out the PCD of the 5 pins, mark out the end of a larger diameter alloy bar, drill five suitably sized holes for the pegs and drive the pegs in.
Drill hole through the side of large alloy bar and insert a drive bar.
If they aren't hugely tight you may be able to whittle down a bit of hardwood and get the job done.
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fazerruss
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| posted on 20/12/12 at 07:53 PM |
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Easy, all you need is a milling machine , a lathe and a rotary table!
"if assholes could fly this place would be an airport"
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tomgregory2000
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| posted on 20/12/12 at 08:34 PM |
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That looks like a cap of a mountain bike brake calliper
Just like the hope one
Just buy the tool
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02GF74
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| posted on 28/12/12 at 05:31 PM |
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quote:
Originally posted by tomgregory2000
That looks like a cap of a mountain bike brake calliper
Just like the hope one
Just buy the tool
easier said than done, searching the web has thrown up nothing hence why I asked.
BTW it is Formula R1 brake calliper.
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