An issue with owning an older (well 2007 isn’t really that old!) motorcycle is that finding parts gets harder and harder. The previous 3D prints for my bike (such as rear peg plugs, key guard and mirror plugs) have really just been cosmetic, but after buying some sleek little LED indicators to replace the huge stock ones, I came across a problem – the fitting point for the rear indicators is specific to the shape of the stock ones, which is a really large cut-out and has nowhere to install the standard indicators designed to fit most bikes. There was also nothing online I could find ready to buy. One option would be to simply drill a new hole through the plastic mud guard, but this would leave the previous holes on show and mean that if for some reason someone ever wanted to put the stock indicators back on, they would now have these new holes to deal with.
No, not on my watch! My first idea started with trying to fit something from the inside of the mud guard, plugging the hole and providing a new point to mount the LED indicators inside of this. The problem was measuring this area, with other wires and complex shapes, it became quite challenging to get any accurate measurements. Since I’ve already used the green PET+ filament on the bike, I may as well make this indicator adapter a feature, and use the flat outside face of the mud guard to easily create a paper template as shown in the top left image. This was scanned, traced in Adobe Illustrator, exported as a .dxf file, and then imported into Solidworks to create the final 3D form. This might seem like a lot of processes, but is a really accurate method of getting a starting point for 3D modeling when dealing with flat surfaces using basic equipment at home.
The final 3D print pictured was done on my new Cocoon Create using 0.2mm layer thickness and took about 55 minutes to print. While the final design looks flat, there are a few tricky details on the back used to lock it in place with only 1 screw (thankfully the mud guard had a useful threaded hole for mounting). I will now be interested to see how well the PET+ plastic holds up out on the road – it seems quite secure, and the indicators are very lightweight, but who knows what can happen out on the road.
– Posted by James Novak
UPDATE: I am now trialing the use of Sketchfab so you can easily view 3D models of my work – check it out below!
edditive blog 
This looks great! The more of your stories I read about 3D printing for a motorbike the more I want to buy one – it looks so much fun!
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