When Machinists Get Bored At Work...

[rude]

Hey Brown dog I think it was Nick B who told me to tin plate or nicol plate it

I ended up nicol plating but sounds like the tin plating does the job too.

220 brews very impressive & from what I have been reading from the QLD mob you make a dam fine brew at that

cheers rude

 

[browndog]

Hey Brown dog I think it was Nick B who told me to tin plate or nicol plate it

I ended up nicol plating but sounds like the tin plating does the job too.

220 brews very impressive & from what I have been reading from the QLD mob you make a dam fine brew at that

cheers rude

yes, I orignially had my rollers straight knurled and had them nickel plated, nickel is much harder than tin, but had a nasty incident with a straightened out coat hangar and ended up getting the rollers reknurled with a cross hatch and then tin plated. I reckon the straight knurled gave a better crush.

cheers

Browndog

 

[NickB]

Weren't me Rude! I've got no idea 'bout lathing or any form of metalwork. Can wire up your temperature controller, but that's about it

Cheers

 

[rude]

Weren't me Rude! I've got no idea 'bout lathing or any form of metalwork. Can wire up your temperature controller, but that's about it

Cheers

No worries Nick too many beers since I got that advice from someone, probably Browndog????

If I was going to do it again I'de try the tin plate but at the time I was worried about it being too soft

 

[_HOME_BREW_WALLACE_]

Just a quick update, i recieved my rollers back from heat-treatment yesterday, and finished machining the bearing diameters this morning, these rollers should last a hellava long time, they are hard as a rock:

all i have to do now is plate the rollers, finish milling the bearing housings/end plates and knock up a hopper.

cheers! :icon_cheers:

 

[chappo1970]

Just a quick update, i recieved my rollers back from heat-treatment yesterday, and finished machining the bearing diameters this morning, these rollers should last a hellava long time, they are hard as a rock:

all i have to do now is plate the rollers, finish milling the bearing housings/end plates and knock up a hopper.

cheers! :icon_cheers:

Thanks Wallace now I have messed in my pants! <_<

Beautiful work BTW. What type of heat treatment did you have them do?

Chap Chap

 

[_HOME_BREW_WALLACE_]

Thanks Wallace now I have messed in my pants! <_<

Beautiful work BTW. What type of heat treatment did you have them do?

Chap Chap

Thanks chap chap! They were nitrided (90-95 HRC ) you cant even file the bearing dia's.

 

[DKS]

Looking good Wallace.
Have you sorted gap adjustment ideas or have a set gap. Ide be interested to see how to accurately adjust and how to mount bearings so they are adjustable.
Daz

 

[chappo1970]

Thanks chap chap! They were nitrided (90-95 HRC ) you cant even file the bearing dia's.

HOLY FRICK!

Talk about going guts Wallace. You are a brewer after me own heart, go heavy or go home!

What are going to make the housing from?

Cheers

Chap Chap

 

[_HOME_BREW_WALLACE_]

Looking good Wallace.
Have you sorted gap adjustment ideas or have a set gap. Ide be interested to see how to accurately adjust and how to mount bearings so they are adjustable.
Daz

roller gap is going to be adjusted by eccentric bushings that stick out of the housing, and a set of feeler gauges (hence why i went with a straight knurl)

HOLY FRICK!

Talk about going guts Wallace. You are a brewer after me own heart, go heavy or go home!

What are going to make the housing from?

Cheers

Chap Chap

Housing is gonna be made from mild steel round bar..... (milled to 50mm x 20mm x 150mm) cos the bloody cheap arse i work for doesn't have any flat bar in stock ahh well, whadda ya gonna do? :lol: I thought i'd go OVERKILL on the rollers 'cos they are the parts that are taking a hellava hiding. atleast my kids and grandkids are gonna be milling grain and killing thier livers when i'm well and truely long-gone....



The whole lot will be tin??? plated when done.
:beerbang:

 

[chappo1970]

SNIP... Housing is gonna be made from mild steel round bar..... (milled to 50mm x 20mm x 150mm) cos the bloody cheap arse i work for doesn't have any flat bar in stock ahh well, whadda ya gonna do? :lol: I thought i'd go OVERKILL on the rollers 'cos they are the parts that are taking a hellava hiding. atleast my kids and grandkids are gonna be milling grain and killing thier livers when i'm well and truely long-gone....



The whole lot will be tin??? plated when done.
:beerbang:

What size mild steel flat bar would you be chasing? I reckon I could.. ahem... cough... source something for you?

As for the longevity of those rollers I would suggest hell would freeze over first before those bad *** boys wear out. Nice touch with plating also. Can't wait to see the final product. Thanks for sharing this.

Chap Chap

 

[_HOME_BREW_WALLACE_]

What size mild steel flat bar would you be chasing? I reckon I could.. ahem... cough... source something for you?

Thanks for the thought, bar has already been milled. 50mm x 20mm x 150mm long :icon_cheers: just gotta whack it in the cnc mill for a quick once-over with some carbide

 

[chappo1970]

Thanks for the thought, bar has already been milled. 50mm x 20mm x 150mm long :icon_cheers: just gotta whack it in the cnc mill for a quick once-over with some carbide

WTF? 20mm thick? Were you worried about a tsunami getting it? :lol:
And people laugh at me for over engineering things FFS! You'll need your weaties when lifting that aroun the brewery LOL

CHAP CHAP

 

[Batz]

WTF? 20mm thick? Were you worried about a tsunami getting it? :lol:
And people laugh at me for over engineering things FFS! You'll need your weaties when lifting that aroun the brewery LOL

CHAP CHAP

That's just how I would have made them, must be the mining in me :lol:

You go WALLACE ! over engineering is for fitters not engineers.

 

[_HOME_BREW_WALLACE_]

Just giving this thread a bit of a bump........http://www.aussiehomebrewer.com/forum/style_images/hops/folder_editor_images/icon_open.gif

I've given up on the 44.dia rollers now, and I have made a couple of bloody beautys........

100mm O.D. x 148mm Long. Cant find a photo of the knurled item, but here is the un-knurled parts:

Drive End:
Dia. 20mm shaft to support a drive pulley and 35mm Bearing.

Non-drive end:

Rollers have been Hardened to 60HRC and are at the tin platers with the end/side plates.

and.....

1.5mm offset eccentric bushes to adjust the gap of the "slave" roller, this will give me a gap of 0-3mm :icon_drool2:

Bearing housing and side plates are at the tin platers as we speak. and will take pics before I put it together....

and then when it is together......

cheers :icon_cheers:

 

[DU99]

Nice bit of turning :icon_cheers:

 

[black_labb]

Wish I still had my lathe around. Consequences are that I am using a corona hand mill for all of my grain needs. at least I get some exercise and an excuse to start drinking before mash in.

 

[freezkat]

Wish I still had my lathe around. Consequences are that I am using a corona hand mill for all of my grain needs. at least I get some exercise and an excuse to start drinking before mash in.

speaking of corona mill and machinists. how the heck could I make that retainer cap/collar that connects the grinding plate to the auger?

The current piece is made of pot metal/ cast iron crap. If I could mill something out of steel it would be much better. The bottom is convex too

 

[black_labb]

The convex side would be not easy to machine as far as I can think, unless you made up some sort of complex limiting system on the lathe. You would need to do a bit of thinking to ensure that you have a spot to hold onto for most of the job.

If it doesn't show from above (I'm probably not thinking of something that should be obvious) I don't really have much experience with a lathe. I made a few bike hubs and found that I didn't have many projects that warranted it, even if it was a nice machine made locally 50 years ago.

 

[freezkat]

The convex side would be not easy to machine as far as I can think, unless you made up some sort of complex limiting system on the lathe. You would need to do a bit of thinking to ensure that you have a spot to hold onto for most of the job.

If it doesn't show from above (I'm probably not thinking of something that should be obvious) I don't really have much experience with a lathe. I made a few bike hubs and found that I didn't have many projects that warranted it, even if it was a nice machine made locally 50 years ago.

oops concave. Both sides are concave. When I get the replacement part, I shoot a pic of the real thing, The thing split where those notches are under load