Looking at making an alteration to the gear thumb lever of my daughters bike. She's almost 6 and can press the small button with her index finger to go up a gear but the thumb lever is to reachy and she doesn't quite have the strength to fully press it.

I was thinking of making an extender piece to lengthen it by about 20mm and bulk it out by about the same. I thought I could maybe mould some sugru round it but I'm not sure how hard it will cure or if it'll be to flexible?

Should be fine. Ideal for jobs like that. You could also use epoxy putty - that'll set rock hard and can be sanded, drilled etc.

Bearbonesnorm wrote: ↑Sat Feb 06, 2021 6:00 pm Should be fine. Ideal for jobs like that. You could also use epoxy putty - that'll set rock hard and can be sanded, drilled etc.

Thanks i'll order some and see how I get on

I'd think it would be too flexible for that purpose.

Oh no... now the doubt sets in. I'll order a few pieces of sugru and go from there. If it's not hard enough I'll look at epoxy putty.

Oh no... now the doubt sets in. I'll order a few pieces of sugru and go from there. If it's not hard enough I'll look at epoxy putty.

If in doubt, splint it with something else and use the Sugru to bond them together and smooth out any join.

Polymorf could be an alternative for that job too?

Turns out Sugru was to flexible when it cured. I've went for some epoxy putty and moulded it this afternoon. Needs a wee sanding in places to smooth it out.