New build, arduino, motomonster, 2dof

Hi substatica this cooler is too small, really bad cooler due to bad thermoconductivity. Better something like that:

I did covered and uncovered, it does not matter at all. But @noorbeast is in right, capacitors are not needed to be covered.

Ive had 6 Normal style boxes through my shop and 2 of the "funky" boxes, All but the funky boxes took 1/2" Not that I dont believe you Noorbeast but i would be shocked if Motion Dynamincs guys are sourcing boxes from the same factory. Although anything IS possible.

I thought I'd ask the seller I got the motor from, GEAR MOTOR 12 VOLT GREAT FOR SAWMILL/CRAB POT PULL/FEED 75-80RPM 50:1, before taking the path of attempting to hammer the shaft in and this is the response I got. They've been very good to deal with FYI.

Good stuff, so as i assumed 1/2".......Noorbeast you must have gotten the 1/100 fluke gear that was a 12mm Diam.

So I've got a pretty sloppy drill press, do you think I should go at it with a 1/2" bit or just hammer away at the 1/2" shaft?

Tap the shaft in, The little knurl from the Drilling of the Small holes shouldn't damage the threads too much, I can still thread the nuts on by hand.

If you have a Round file that could help remove some of the crap from the smaller holes, I use dremel with a round sanding drum

Further info from the motor seller, they've graciously offered a partial refund to make up for the fact that the listing details said the motors accept a 1/2" shaft, which the delivered motors, in their current state, do not. Wait for your motors to arrive so that you can measure them before sourcing shafts or machining parts folks.

Can you post a picture of the shaft that youre using?

I'm still waiting on the 12mm shaft I ordered to arrive. There's no way the 1.2" was going to be hammered in, the bore measured just slightly under 12mm, an extra .7mm wasn't just going to get hammered it. The 1.2" shaft and the 12mm shaft are both listed in my parts list (which I'm updating) on page two of this thread,

http://www.xsimulator.net/community...duino-motomonster-2dof.6159/page-2#post-67913

Curious why you would use solid shafts and not just threaded rod ? Are you planning on relying on the small 4mm key holes to secure the shaft to the gear ?

And FYI the only reason we suggested to tap the shaft in with the hammer is the fact we assumed you were using the right size axle for the gear. Add in the fact the 4mm key holes have a little bit of flashing left over from being drilled at the factory That usually catches on the threads of the Threaded rod and can easily be tapped with a hammer. Obviously we know a 1/2" rod Wont fit into a 12mm hold.

Yes, I was planning on using the key holes and beefy spring pins to hold the shaft in place, hopefully in addition to a good friction fit. I don't have a tap/die set at the moment I never considered tapping the bore. These forums are a wealth of knowledge, but the best approach is sometimes difficult to discern with limited tools. I'm pretty new to machining parts like this, the first suggestions of tapping it into place did seem feasible until I had another look at the parts and measured again -- I didn't mean to offend anyone.

I hate to have a bad tap/die destroy a part I'd have to make or order again, as well I have no experience with them so it would be another skill to learn -- which I want to -- just too many new skills on the same project usually leads to somewhere bad

Totally. Thankfully I'm starting to build up some metal scrap to experiment on.

At the risk of going off topic, I've gotten quite disenchanted with the quality of most tools, tired of sockets stripping bolts, drivers stripping screws or shearing their own heads, the quality of pretty much everything has gone down drastically (perhaps this is just what's available in downtown Toronto, other localities may have higher standards in shops) -- I've pretty much decided to only invest in tools I believe will perform well and last a long time. For that reason I shy away from buying things like a tap/die set at the local hardware store which is the right size without some research or trustworthy endorsement. I mean these days you can't even feel the build quality of a lot of tools without having to tear open the blister pack first.