Could I please trouble you for some assistance thank you.
I’m in the process of building an excavator at the request of one of the grandsons.
It’s a bit of a mongrel as I’m using two sets of plans; one for the body and the for the digger arms plus lots of fudging and guess work.
I’m up to making the hydraulic rams using 8mm dowel for the rods & 19mm dowel for the cylinder; both Tassie Oak (Aussie Hardwood).
As I don’t have a lathe, I’ll use an engineers vee block and a bradpoint bit on the 19mm in my drillpress.
My question is by just drill an 8mm hole with the bradpoint bit into the 19mm dowel, is that sufficient enough to make the ram functional?
The actual plan suggests a 1/4” steel rod going into a 1/4” x 3/8” nylon tube inside the 3/4” dowel.
The plan is in imperial measurement which I’ve been working through, but saying that it’s sparse on details.