"John Rumm" wrote in message
o.uk...

On 24/04/2018 12:39, Harry Bloomfield wrote:
Andrew Mawson submitted this idea :
About 30 minutes - thread and pictures here :

https://madmodder.net/index.php/topic,12558.0.html

Andrew

Might it have been better, to stop the two ribs a bit further back from
the tube end, to allow the tube to go on further - to make it a more
positive grip on the starter?

An advantage of the current "right through") design is that if the lugs get
mangled/wear, all you need do is a chop a bit off the end and you have a
"fresh" end to use.

Also remember - this was an "immediate need" sort of thing.

So steam up Fusion 360, draw two concentric circles 19.7 mm and 22 mm, draw
two small 2 mm circles on the diameter where it bisects the smaller circle
half protruding into the middle. Select the shape so produced and extrude it
55 mm - save as an .STL file - port it to the Cetus and have a cup of tea -
job done, problem solved. 5 mins to draw up, about 30 mins printing, no need
to get too anal about the design.

I did consider incorporating a knurled gripper for ones fingers but it just
wasn't worth the bother

Andrew