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  #21  
Old 4th November 2018, 07:11 AM
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Ameiseuk Ameiseuk is offline
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Quote:
Originally Posted by awolfinsheepsclothes View Post
I wasn't even aware of the master cylinder flex problem.
Dave
Nor me!

I've watched some of the commercial scale 3D printers that wiggle/chain reaction cycles use for prototyping new parts.
Their machine could knock out the fog light grilles in a couple of hours
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  #22  
Old 4th November 2018, 10:59 PM
HPsauce HPsauce is offline
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Originally Posted by MikkiJayne View Post
Just discovered that contrary to expectation, my mk2 doesn't clear the plastic trim so more fiddling needed there.
Thought it looked like a tight fit, hence the question....

Given the way it fits round the strut brace and the primary direction of force the top appears largely superfluous so could be reduced?
Maybe even become a clip-on item again?
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Finally: gone, but not forgotten.....
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  #23  
Old 6th November 2018, 04:28 AM
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When you've sorted the prototyping of the master cylinder wedge, I'll take two in carbon filament please MJ!
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  #24  
Old 18th November 2018, 07:36 PM
MikkiJayne MikkiJayne is offline
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I've been making parts for the manual swap so I thought I'd show how to go from concept to physical part.

The original footrest has to change to make room for the clutch pedal, and rather than mucking around with the original I thought I'd just print a new one.

I started by tracing the outline of one edge of the original footrest on to a piece of A4, and then scanned it in as a tiff image:



Next, I used an online service to convert the tiff image from a bitmap to a DXF vector drawing. This is effectively a point cloud so not that useful yet.



I made the DXF in to a background layer in Autocad and then drew the shape over the top of it. This time its a nice CAD drawing using lines and arcs.



I imported the drawing in to Fusion360 and extruded it. Now we're getting somewhere



After a few hours of measuring the original and making some changes as I went along I got to this



Added the final detail and the 3D model is done



This would actually fit on my printer in one piece, but because of the angles it would need a lot of support structure. That takes a long time to print, and also adds a lot of risk as the support is very weak and its easy for the print head to knock it over resulting in a failed print. To avoid that, I cut it in half





Loaded the first half in to Cura for slicing. 20 hours to print...



First print done





Second print done



Glued together and next to the original



Installed. I'm pretty pleased with how it turned out, although I'll make some changes to the next one to speed up printing and improve strength.

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  #25  
Old 18th November 2018, 07:56 PM
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steamship steamship is offline
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Quote:
Originally Posted by MikkiJayne View Post


I imported the drawing in to Fusion360 and extruded it. Now we're getting somewhere



After a few hours of measuring the original and making some changes as I went along I got to this


You make it all sound so easy. I'm amazed at how you got from that first sketch to the extruded and 'some changes' later version.
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  #26  
Old 18th November 2018, 09:16 PM
MikkiJayne MikkiJayne is offline
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It was about four hours from the extrusion to the first model, then another hour to add the final detail and cut it in half.
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  #27  
Old 18th November 2018, 09:35 PM
awolfinsheepsclothes awolfinsheepsclothes is offline
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I didn't understand a word of that! are you sure it is english? and I've spent a couple of hours on sketchup, and Tinkered and watched hours of tutorials on youtube trying to get myself unto speed to buy a printer.
great work as usual MJ.
Dave
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  #28  
Old 18th November 2018, 09:40 PM
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tc4332 tc4332 is offline
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It is English . . .well sort of geek.
I have purchased the same model as MJ and it is a cracking bit of gear and so much cheaper than these things were a few years back.
I'm OK on the theory but I am lucky in that my 36 year old son is also dead keen. He is playing on Autocad at the moment designing something for my model tramway. Just hoping that it all comes together.
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  #29  
Old 19th November 2018, 10:34 AM
awolfinsheepsclothes awolfinsheepsclothes is offline
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I still don’t understand but I like it! good job you put plenty of pictures up! You went from a curve extruded too a masterpiece! Amazing I’ve done the tutorials and and that was fine so I went onto drawing what I wanted to make and nothing I had learnt applied to what I wanted to draw with double curvatures.
Respect!
Dave
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  #30  
Old 26th November 2018, 03:07 PM
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Dezzy Dezzy is offline
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Quote:
Originally Posted by MikkiJayne View Post
It was about four hours from the extrusion to the first model, then another hour to add the final detail and cut it in half.
Depending on what version of AutoCad you're using you can import PDF's straight in and scale them to suit
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