Engines > From Plans
Mount Trapezium
Jasonb:
Thin disc in an angle grinder for the long cuts then stitch drill the ends and finish by milling.
Charles Lamont:
I would have not have bothered with the chain drilling and gone straight in with a slot drill. Two or three trips all round to get to depth, leaving about 0.010" on the sides for a full-depth climb cut to finish. I would pull out and reposition for feedscrew backlash at the 'wrong' end of each cut as I have no DRO.
redhouseluv:
Oh right - there are better options than the long route I took, good to know. I'll remember for that for future! In the meantime I've been attacking the woodwork and have again gone in with holes and mill, although given what has been discussed, a little OTT :D
The result is looking good though which is always a bonus .........right, finally time to continue assembling an engine!
PaulR:
Oooh, looking good!
redhouseluv:
I decided to put off loctiting the crankshaft and crankpin to the web as it becomes very difficult to assemble/disassemble everything; I imagine I'm going to be doing this several times over the course of the next few days. So......I have drilled and tapped some holes for a pair of small grub screws as a temporary measure; will fix permanently at the end.
Now cutting lengths of 8BA threaded bar to make studs ........there are a lot of them and I'm glad I bought nuts which are 1 size smaller in OD (9BA) as there are some small spaces in which thery have to fit!
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