Need Help Defining The Chin Area

For discussion of the drilling and shaping of the stummel.
shikano53
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Need Help Defining The Chin Area

Post by shikano53 »

I'm just working on another Lovat and am having difficulty defining the 'chin' area.
If you could comment on these two photos it would be greatly appreciated.
I'm thinking this falls into the area of NO chin but it still confuses me.
As always thank you in advance.

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scotties22
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Re: Need Help Defining The Chin Area

Post by scotties22 »

I would start by making the bottom line of the pipe absolutely straight. Do that, then post another pic
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LatakiaLover
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Re: Need Help Defining The Chin Area

Post by LatakiaLover »

IAWS
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sandahlpipe
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Re: Need Help Defining The Chin Area

Post by sandahlpipe »

I don't disagree about the bottom line, but I think where help is needed is actually a tighter radius on the bowl/shank transition. When there's too much meat just over the shank, it makes the chin look off.
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shikano53
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Re: Need Help Defining The Chin Area

Post by shikano53 »

Thank you! I will work on both and then post another pic.
scotties22
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Re: Need Help Defining The Chin Area

Post by scotties22 »

No matter what is going on on the back side of the bowl the bottom line being straight just about fixes the chin problem. Is there a bit of extra at the bowl/shank junction? You betcha. BUT...one thing at a time. Fix the bottom line. Post another pic AND THEN we'll address the bowl/shank junction and the top line of the shank.
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RickB
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Re: Need Help Defining The Chin Area

Post by RickB »

IAWEA. Tightening those areas up and dropping the front of the rim a titch would help a bunch.
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shikano53
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Re: Need Help Defining The Chin Area

Post by shikano53 »

Here are a few more pics. I used one of the small bits on my Dremel.

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Rick, are you saying to file or paper down the front of the rim a bit?
wdteipen
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Re: Need Help Defining The Chin Area

Post by wdteipen »

Do you have any medium to large flat files? Your bottom line is still bowed from stem to chin. A flat file will show you as well as remove the high points. To help with the shaping of the bottom of the bowl, think of it as a sphere cut in half.
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shikano53
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Re: Need Help Defining The Chin Area

Post by shikano53 »

thanks Wayne. Yes I do. I will work on that tomorrow and post more pics.
Cheers
shikano53
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Re: Need Help Defining The Chin Area

Post by shikano53 »

I have been using a round file which is probably part of the problem. After using the flat file on the bottom do I use a round file again to round up the edges?
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sandahlpipe
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Re: Need Help Defining The Chin Area

Post by sandahlpipe »

Use a round file for the bowl/shank junction. Use a flat file for just about everything else. You've gotta be a wizard to keep a straight line from getting wavy with a round file. You can also use sandpaper on a flat surface to flatten the bottom line.
---
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shikano53
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Re: Need Help Defining The Chin Area

Post by shikano53 »

Thanks Jeremiah! For me anyway that's great information, and a huge step forward since I've been using a round file. Working on it now. I was just waiting more or less patiently to see if someone responded. I'll go back out and work a bit more and post some pics as I think it's coming along.
wdteipen
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Re: Need Help Defining The Chin Area

Post by wdteipen »

In general, I use a flat file for flat lines and a round file for curved lines. So, flat file on straight shanks and bowls like billiards and Dublins and round files on curved shanks and rounded parts of bowls like the transition between shank and bowl.
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sandahlpipe
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Re: Need Help Defining The Chin Area

Post by sandahlpipe »

I use pippin and crossing files for curved lines, but that's just because I'm stranger than Wayne.
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scotties22
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Re: Need Help Defining The Chin Area

Post by scotties22 »

I like to use half round files on the chin and cheeks. I use a round file to define the bowl/shank junction. And I'm not weird at all :wink:
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RickB
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Re: Need Help Defining The Chin Area

Post by RickB »

shikano53 wrote:Rick, are you saying to file or paper down the front of the rim a bit?
Yessir - for billiards and the like, you want that chamber to airway angle to be ~92-93 degrees, with the rim perpendicular to the chamber. It lends a more open appearance - right now it looks like the front of the rim is higher than the back, which is backwards.
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shikano53
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Re: Need Help Defining The Chin Area

Post by shikano53 »

Thanks folks for all your kind and instructive comments. Rick; I'm just heading out to my shop to turn the heaters on and make another coffee. I have been worrying the shank now and I think, and I stress the 'I' it is looking straighter but still can see daylight in a few places. I will address the rim and then post a few more pics.
Scottie, I define weirdness defined in my now 11 year old grand daughter but I think that's more because of her flaming red hair.
But that's a story for the general section, not in a serious discussion about chins.
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RickB
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Re: Need Help Defining The Chin Area

Post by RickB »

Honestly, what's helped me most for that bottom line is putting a good long piece of 120 on very flat surface (I like my kitchen counter :lol: ) and scrubbing it lengthwise. I mark under the very center of the chamber with pencil as the no-no line (everything behind needs to be flat, everything in front is the chin), and then recheck with a straight edge (and mark high spots with a pencil). Lather/rinse/repeat as needed - but it gets that bottom line good and flat and starts the chin exactly where it needs to start. Advice above RE: flat files for straight lines is advice I've heard and heeded to (relatively) good effect.
Chronicling my general ineptitude and misadventures in learning pipe making here: https://www.instagram.com/rustynailbriars/
shikano53
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Re: Need Help Defining The Chin Area

Post by shikano53 »

Thanks Rick, that sounds like a good idea (not on the kitchen counter though). Here is a picture update of where it is at for the moment. I can see there is still a lot of material to take off of the sides. It appears to my eye that it seems like a wedge from the stem to the shank/bowl so lots of material still to take off there. The stem is my first attempt at an ebonite saddle stem but for now, I'm still just working on the stummel. Still need more work on the rim as well.
P.S. Is the chin more or less correcting itself?

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Last edited by shikano53 on Thu Nov 02, 2017 3:09 pm, edited 1 time in total.
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