Cringle boiler build.

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Richard Hed

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yes tony has a great video on making one, but i think you will not find it much fun to make on a small hobby mill and lathe.
Ive just never had a need for a 'boring head' but if i did i would still choose to buy a cheep chinese one for £50 im certain there better quality than your average hobby machinist can produce and much cheeper in time and time is momey after all.
Best regards.
luke.
Certainly, yet often one has more time than $$. I have better than average hobby tools, REAL lathe and intend to buy a REAL mill. Until I managed to obtain that nice lathe, (a Grizz G4003G) I had an Enco kidz toy which would be incapable of making parts easily or quality wise (a poor workman blames his tools, like me). I have used boring heads many times and quite frankly, they save a lot of time--I would't say "indespensible" but close to it. On a mill, I would say it is indispensable, but not entirely. Without one, it would be a "hell" setup. If I have enough moolah or am in a hurry, I might buy a cheap Chinese one but if I simply want to make a project one, I can do that too.
 

darwenguy

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Each to there own, i just make do with what i have, what i can afford and buy what i need.
I have an old grizzly wouldnt realy call it a REAL LATHE lol.
Best regards.
Luke.
 

Richard Hed

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Each to there own, i just make do with what i have, what i can afford and buy what i need.
I have an old grizzly wouldnt realy call it a REAL LATHE lol.
Best regards.
Luke.
-Which one? I managed to order mine in November of last year (2020) but they were not in stock. It finally arrived in Bellingham on Jan. 7, 2021. I got it for the old price that I ordered it at of 3950$ but in the catalog the price had risen to something in the order of 4200$. Only a couple months later, now, it is 4800$. This is the G4003G--my first choice was the G4003 but it just didn't have what I wanted. The difference between the G4003 and the G4003G is very great--they are NOT the same lathe at all , altho' one would thimpfk they would be with minor differences. I do not know why Grizz does that, IMNSHO they should have a completely different number-designation because they are so different.

This G4003G is accurate. I have a few minor complaints: the inside ways on which the tailstock travels does not extend inward toward the head stock far enough. I thimpfk this is because they removed the removable section at the headstock and failed to extend the ways. I needed to put a steady rest there and it was about 2" short of what I needed. Then the cover for the gears on the end is simply removed with a couple hand nuts which I hate, altho' it is really just a minor inconvenience, I reaqlly would like it to have a swing out cover with hinges. There is some other minor problem which I have forgotten too. Overall, this is a great machine especially for the $$. A comparable machine made by Germans, European or American would cost several times as much, even Taiwan and Japanese stuff is much higher cost.

You are correct if you are selling something, but for hobby, it is entirely different. Even a crappy homemade boring head would be better than alternatives as a boring head really doesn't have that many critical parts--don't get me wrong, the thing as a whole must end up being accurate but if you have something off or it doesn't quite fit right, it would most likely be irrelevant to what you use it on.
 

darwenguy

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Hi all, back to the subject.
I have all the parts machined and fitted now.
First i made the brass hinges from the flat bar stock.
20210608_114553.jpg

First turn and tap the m3 stud.
20210608_114408.jpg

Then mark and drill for the hinge pin hole.
20210608_114955.jpg

Cut the parts off the end of the stock and file the corners round.
20210608_115919.jpg

20210608_131829.jpg

Next cleaned up the door casting with a file and drilled for the door handle and hinge pin holes then tap m3 for the door handle.
20210608_134811.jpg

Then i made the door handles from 3mm brass bar.
First turn and thread m3 then part off to length and round off the end.
Then aneal the parts before bending.
20210608_153952.jpg

I use a bar with an m3 hole dilled and tapped in the end to hold the part and use pliers to bend.
20210608_154859.jpg

Then fit the handle and door hinges and pin.
20210608_155220.jpg

And thats all the fabricating and machining done now.
Tomorrow i will clean and paint the boilers and fit all the shiney brass bits.
20210608_160413.jpg

Best regards.
Luke.
 
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Richard Hed

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Hi all, back to the subject.
I have all the parts machined and fitted now.
First i made the brass hinges from the flat bar stock.
View attachment 126379
First turn and tap the m3 stud.
View attachment 126380
Then mark and drill for the hinge pin hole.
View attachment 126381
Cut the parts off the end of the stock and file the corners round.
View attachment 126382
View attachment 126383
Next cleaned up the door casting with a file and drilled for the door handle and hinge pin holes then tap m3 for the door handle.
View attachment 126384
Then i made the door handles from 3mm brass bar.
First turn and thread m3 then part off to length and round off the end.
Then aneal the parts before bending.
View attachment 126385
I use a bar with an m3 hole dilled and tapped in the end to hold the part and use pliers to bend.
View attachment 126386
Then fit the handle and door hinges and pin.
View attachment 126387
And thats all the fabricating and machining done now.
Tomorrow i will clean and paint the boilers and fit all the shiney brass bits.
View attachment 126388
Best regards.
Luke.
Luv ur stuff. What I really appreciate is tht you did the castings yourself!
 

darwenguy

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Hi all.
Finished making the boilers now.
I paint the boilers with high temp spray paint, first mask off the bushes and brass bits.
20210609_122536.jpg

20210609_125423.jpg

20210609_160417.jpg

And all the shiney brass fittings ready to fit. I buy all my fittings from 'cleavdon steam' i would highly recomend them for a great service, quality and price.
20210610_144450.jpg

And the finished boilers..
20210610_145919.jpg

20201217_172149.jpg

20201217_172136.jpg

20210108_180757.jpg

And thats all folks. Im just working on a new horizontal boiler design so will record making that in the future.
Best regards.
Luke.
 

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