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Vehicles & Models / Re: Chris's Marion 91 Steam Shovel
« Last post by Craig DeShong on Today at 03:42:15 AM »
Pretty slick Chris  :ThumbsUp:
From Kits/Castings / Re: Textile Mill Diorama
« Last post by Ian S C on Today at 03:27:57 AM »
sing coal might be ok. but it breaks down as it oxidises over time, and the gravel just happened to be there at the moment . Ian S C
Your Own Design / Re: New Project Mill Engine
« Last post by Ian S C on Today at 03:21:08 AM »
can you open the jaws of your chuck inside the rim, and do the outside and a face that way, 4 jaw would be best, but three jaw with some packing to get it to run concentric is ok.. Then it's a case of how slow you can go.
Ian S C
Chatterbox / Re: Talking Thermodynamics
« Last post by steam guy willy on Today at 02:04:58 AM »
Hi MJM ,  so ,a new word for my vocabulary ..Regression !! ... the curve for the cooling is quite dromederious !! I think you have your own species down under or were they all imported ??  I like the new word but it sounds a bit akward like when Scotland decided to become devolutionied !! I was looking at my water butts on the allotment and they were different colours ...i tested the temperatures with my hand and they seemed slightly different ,so, do the different colours of the rainbow absorb different amounts of heat and are these  equal to the order in the rainbow ??? perhaps i could to an experiment and discover infra red !!!!
Your Own Design / Re: Freelance mill engine from Stuart castings.
« Last post by crueby on Today at 02:03:35 AM »
 :popcorn: :popcorn: :popcorn:
From Plans / Re: Elmer's # 32 Tall Vertical Open Column 2X Size
« Last post by toolznthings on Today at 01:49:13 AM »
As always,
Thanks, Bill  :)
I have now been making the raised parts to mount the components on. These plates will be undercut so that a JB weld fillet will attach more firmly... the 'studs' will be bolts screwed up from underneath and secured with nuts to get the correct height. The dynamo is actually on the centre line with the main bearing assy's,which is quite fortunate...
From Plans / Re: Muncaster Grasshopper - Work in Progress
« Last post by crueby on Today at 12:30:14 AM »
Looking great Kvom! 

Making all those bars the same length between holes is a perfect spot for a jig - drill the holes in one end of each bar, use that hole to screw it to a rectangular block in the mill vise. Move the table over the distance needed, and lock it down. Then drill each part, using the first hole to hold them to the jig (can put another clamp on to hold the bar into a groove to hold it straight).

Vehicles & Models / Re: Chris's Marion 91 Steam Shovel
« Last post by crueby on Today at 12:25:14 AM »
Getting caught up on posting from the last couple of days - I made up the U-shaped pieces that go on the front corners of the frame, which both reinforce the corners and give it some protection from getting hit by the bucket and/or rocks. On the real machine, the front sides of these are all scored up from the bucket getting too close when digging to the sides. They were made from 3 pieces of flat bar, temporarily screwed together and silver soldered. Here is one side attached, the other one ready to go on:
On the lower horizontal plate of those braces will be a support that holds a rod that angles back to the ends of the track supports that I have been talking about recently. Made those from a length of rectangular bar, first milled a slot in either end of the bar:

then drilled the cross holes

and then cut them apart and rounded the ends:

They still need to be soldered to a base plate to bolt them to the front corners with. At the back of the track support is another of the angle rods - for whatever reason they shaped these differently. I was about to mill them out of some flat bar, then Swarf Maker's comment about milling out of round bar reminded me (thanks!) that I have lots of round bar, and they would fit in a length of 5/8" bar. Also, using the collet block makes it easy to rotate them 90 degrees at a time to shape each side. So, started by milling in the outer dimensions:

then shaping the block at the end that will take the rod:

then milling in the 'legs' of the piece:

drilled the hole for the support bar

and tapered the two side legs:

Here are the rear supports after cutting them off to length - they also need to be soldered to a base plate still, and get the tops rounded off around the hole.

From Plans / Re: Elmer's # 32 Tall Vertical Open Column 2X Size
« Last post by b.lindsey on May 21, 2018, 11:16:01 PM »
Thought I had posted already but apparently not, even though I have been watching. Very nice work on the cylinder. The finish looks great too. Thanks for posting this one.

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