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How do I?? / Re: Making my first boiler
« Last post by Chuck in E. TN on Today at 02:24:49 PM »
I have a ball bearing 'nudger'. I think I'll try that.
Can I do it with one anneal, or will it work harden before I get it formed?
the end plate material is still in a tube shape, though I have slit both tubes. I'll anneal them and get them flat.
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How do I?? / Re: Making my first boiler
« Last post by chipenter on Today at 02:16:06 PM »
A lot easier than bashing to a former , you have to turn the former in the late anyway just leave it in the chuck , make a washer for the tailstock centre and clamp the copper disk , and run a ballrace at 45 degrees onto the disk it will go down in a wave .
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Radio Control Models / Re: Tracked Cat delta skidsteer
« Last post by ddmckee54 on Today at 01:57:47 PM »
Since "It didn't happen without pictures", I brung pictures.

The first attachment is the radiator grill/cooling fan fiasco.  I don't wanna talk about it.  Let's just say that when I screw up, I don't do it in half measures.

The cooling fan that is mounted to the radiator grill will blow air down over the TREX board, onto the drive motors, across the battery pack and out the opening cut in the floor of the cab.

The second attachment is my "helpful" shop gnome.  "On his break"!  Again!! As usual!!!  I've REALLY got to get that union contract out and read the fine print to find out just how many "breaks" he's allowed, and how often.  I think I'm gettin' Flim-Flammed here.

The third attachment is the transmission mount, transmission/motors, TREX driver board mount, and TREX board in what will be their permanent homes.  With the re-designed transmission mount I've got room to slide in just about any capacity 2S Lipo battery pack that I want to use.

The fourth attachment is my "helpful" shop gnome doing what he considers to be helping.  I guess it really is true, if the only tool you have in your toolbox is a hammer then every problem looks like a nail.

Don
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Project Logs / Re: Sheet Metal Brake and 3d Printer.
« Last post by S. Heslop on Today at 01:31:54 PM »
I was thinking for the protrustion I could just fiddle aroud with slightly oversized bolt holes to get things square. Maybe plasma cutting is better than I give it credit for, but I was kind of assuming it'd be off by a little bit in roundness and stuff.

What has me more worried is their position along the axis, since that might try twist the plates if they're misaligned and cause weird problems.
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Project Logs / Re: Sheet Metal Brake and 3d Printer.
« Last post by WeldingRod on Today at 01:03:55 PM »
Yes, the chamfers need to be concentric, but the thing you really need to control is how far the chamfers fit into the linear rail.  Thus, the width and angle of the chamfers is important.  You could gauge it by pressing a scrap of rail against the wheel and measuring the wheel OD to the far side of the rail.  My model shows 42.09mm for this dimension (probably 42.0 mm in reality).  You can live with this being a bit bigger or smaller due to the eccentric adjustment, but you really want them all the same.
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Project Logs / Re: Sheet Metal Brake and 3d Printer.
« Last post by S. Heslop on Today at 11:49:53 AM »
If you are machining wheels, the consistency of chamfers is critical to the function.
In my design, you can put quite a few un-chamfered wheels to good use too...

Sent from my SAMSUNG-SM-G891A using Tapatalk

I just realised that earlier today. That i'd only need to chamfer... 16, i think, out of the 20-something wheels. That means I could just buy the 16 ready made wheels. That's still 45 for just the wheels themselves and not the bearings.

I'm thinking the absolutely critical dimensions are the concentricity of the outside chamfer to the inside, the chamfer being perpendicular to at least one of the sides... or the bore (flanged bearings are confusing), and then the chamfers being parallel to each other. The width and depth of the chamfers would be nice to keep accurate but I feel it's something that could maybe be adjusted to compensate for with shims and stuff.
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How do I?? / Re: Making my first boiler
« Last post by Chuck in E. TN on Today at 11:38:23 AM »
Jeff, I've never spun metal. How difficult is it to spin copper?
Can you recommend a setup?
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Project Logs / Re: Sheet Metal Brake and 3d Printer.
« Last post by WeldingRod on Today at 08:49:55 AM »
If you are machining wheels, the consistency of chamfers is critical to the function.
In my design, you can put quite a few un-chamfered wheels to good use too...

Sent from my SAMSUNG-SM-G891A using Tapatalk

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The Design Shop / Re: 3D Printed Ball Nut for the Insane
« Last post by slowcoach on Today at 06:04:01 AM »
Brilliant that Joules  :clap:

Rob  :thumbup:
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Project Logs / Re: Sheet Metal Brake and 3d Printer.
« Last post by S. Heslop on Today at 05:42:07 AM »
Nice the extrusions arrived, and all seem to be the right length. I gotta say these corner cubes look terrible though. They threw some sweets in the box too but at over 100 it'd take more than a few refreshers to impress me.

My pledge to the world is that if I ever run a tool related online shop i'll throw in a few pozidriv tips with big orders. You can never have enough of those.


Edit: First things first though, I gotta try clear some space to put it.
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