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littleton shot maker improvements


seb
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Hi Guys

 

I thought I would share what I have been up to.

 

So far I havent completed my shot maker but I have a littleton pan I am going to use. The ramp was very bumpy and rough on it and the edge was very rounded so I thought I would machine it.

 

I also have a couple of questions for anyone with a littleton. What angle is the heating element? I have heard 30 degrees mentioned, the ramp is cast already at 20 degrees to the pan so if I set the pan at 30 the ramp will be much steaper, could someone have a check for me please and see if it is the ramp or pan that is 30 degrees.

 

I also have a digital temperature controller (PID) and thermocouple, relay etc to build into it to keep the temperature spot on but forgot to take a photo of this bit.

 

If only littleton had drilled the dripper holes level!

 

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Seb

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I am going to have a couple of catch baskets, the main one to catch the shot and another underneath to catch shot while I empty the main basket. I still havent located any mesh fine enough yet to line the catch basket with.

 

I am going to try fabric softner as the coolant. I might eventually build cooling into it. Either cooling the coolant directly or having some sort of heat exchanger coil in the tank.

 

The temperature controller has a smart function that sort of learns when to switch the heater on to keep the temperature exactly right, hopefully within 2 degrees!

 

Seb

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I am going to have a couple of catch baskets, the main one to catch the shot and another underneath to catch shot while I empty the main basket. I still havent located any mesh fine enough yet to line the catch basket with.

 

I am going to try fabric softner as the coolant. I might eventually build cooling into it. Either cooling the coolant directly or having some sort of heat exchanger coil in the tank.

 

The temperature controller has a smart function that sort of learns when to switch the heater on to keep the temperature exactly right, hopefully within 2 degrees!

 

Seb

Try here for fine flyscreen mesh .http://www.newblinds.co.uk/content/fly_screens_mesh

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  • 1 month later...

I haven't had much time to do a lot to the shot maker but got the temperature control finished today, just have to work out the ideal temperature.

I still have to make the shot basket then I can give it a try. I also want to make a bracket to angle it properly.

 

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Yes it doe/s look good, cannot figuer out what its dropping into, is there a 100ft well under that hole its going thru??

 

They havn/t shown anough to copy :hmm: , ill stick with mine as is. john

 

 

That shotmaker is dropping about 5 ft through a series of waterjets and into a waterbath you can see six of them mounted onto the frame .

you can see it working on youtube.

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Ran the shotmaker today for the first time. There are a couple of problems, three of the drippers need tapping to keep them running. The other problem is the dimples in the shot. This must be down to the coolant, I have been using fabric softener from Aldi. Anco so soft is the brand and I used it neat. Maybe its a bit thinner than other brands.

 

Are you guys that are using softener using a different brand to this? I might try raising the coolant temperature a bit to see if I can get round it.

 

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i think what is happening is when the lead cools it shrinks slightly and the out side of the shot is set and when the core cools it creates a sink dimple but if you add atimony (dont go with the spelling)as it cools it exspands slightly and removes the dimple thats why printers use to use it so when thay cast the type it filled the mold. i might be wrong :hmm:

 

p.s. the shot looking good

Edited by fruitloop
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