Thanks again for all the feedback guys.
I think at the very least Terry's approach is spot on. I made sure to get a big enough block that if the drill should wander, there's enough room to account for everything else.
Petertha, very nice job on the rendering. I may do the same in fusion. I'm...
Awesome, thank you everyone for the feedback!
I think from what I gather, I'll grab at minimum a 1"x 9 or 12" drill and plan to drill from the headstock with the piece mounted on the carriage. Then line bore to the finished dimensions. Pethertha, I'm glad to hear that I wasn't the only one...
Hi everyone,
A while back I purchased the Martin Ohrndorf V-12 plans. I've been studying them for a while to get an idea of the construction. I found a supply for 7075 aluminum for the crankcase at a reasonable price. One part has me a bit stumped so I'm trying to wrap my head around the...
Hey Everyone, I have a couple of random questions about the Edwards radial five engine. I’m hoping to get some feedback.
I’ve heard of people concerting this design to run off gasoline. What would be involved with that? Does it involve a distributor or is it one Hall effect sensor and a wasted...
Hey everyone,
After more testing I have more positive news I believe. This is the results with a carbide tipped boring bar running 2050 rpm with .003” feed rate with between .001” and .003 depth of cut.
The 12l14 is a very interesting material to work with. Even when I’m drilling I can go...
Hi guys, thanks again for the help. I think my lapping technique was way off, rpms too high and not moving forward and back fast enough.
The reamer idea was mostly just an idea in terms of speeding up the process. It takes me some time to bore on the lathe, just trying to think of a way to...
Thanks for the help everyone. I figured I’d have a bit of a learning curve on this.
I got in a barrel lap, a perk of having a McMaster account at work, I also got the value tin of 120 and 240 Clover lapping compound. I’m not sure if I’m in the ballpark here. I tested the 120 which seemed too...
Hi Jquevedo,
Could you please elaborate on the hone that you use? Is it the finger style or the ball type? I did another test using the indexable carbide boring bar to get me close to final dimension and then finished with a brazed carbide taking about 2-4 thousands per pass, and I was able to...
Thank you guys for the feedback. I didn't occur to me to bore on the mill with a boring head. I'm in the process of acquiring one. I think I may give that a go first, to see what I can come up with. If that doesn't pan out I suppose I can try to reamer after getting the bore close to final size...
Hi everyone,
I’m looking for some advice on reaming 12l14 steel cylinders for an I/C radial.
I tried my luck at boring on the lathe but struggled with consistent results. Either my surface finish was nice but size was off, or I’d try to remove too little and have a rough finish. My sweet spot...
Hey Rob,
Looks to me and a quick google search sti stands for screw thread insert, or a heli-coil tap. Best to keep them separate otherwise you’d break the sti tap off in a smaller hole.
Hope this helps,
Kyle
At my work we have a fruit fly problem which is terrible because they are attracted to the wet paint and will land in the finished paint jobs. We make traps with apple cider vinegar and cardstock rolled into a funnel taped to the jars with a tiny hole in the bottom.
Kyle
Thank you Hopper,
I'm hoping the heavier and stiffer machine will translate into nicer and more accurate parts.
Not much time this weekend, fiancé had wisdom teeth out and overtime at work.
I made a mandrel sized at .1252" from drill rod then heated and pressed a rocker arm on.
Then I...