Welcome to
the forums at bobdunsire.com
bobdunsire.com forums bobdunsire.com forums
You can reset your password by going here. Be sure to try your current email and any email addresses you may have had in the past.
Otherwise please use the Contact Us link at the bottom of the forums. In order to help you, please provide the following info: Your Display Name from the old forum and any possible email addresses you would have used before. Without that info we cannot locate your account.


Go Back   Bob Dunsire Bagpipe Forums > Great Highland Bagpipe > Technique & Instrument
Register Blogs FAQ Members List Calendar Search Today's Posts Mark Forums Read

Technique & Instrument Related to techniques, to the instrument, to the components, to maintenance.

Platinum Sponsors
Reply
 
Thread Tools
Old 06-16-2017, 09:32 AM   #21
el gaitero
Holy smoking keyboard!
 
Join Date: Feb 2005
Location: Estados Unidos
Posts: 4,618
Default Re: Uneven Drone Bores

Quote:
Originally Posted by pipedktr View Post
Please describe features and styles of the most effective reamers.
Please list a few best reamer brands and models.
Please proved names of reputable retailers and or online vendors.
Thank you.
GMT
Google turns up a lot of these in sets or single and operating info.
el gaitero is offline   Reply With Quote
Gold Sponsor
Old 06-17-2017, 04:37 PM   #22
zarb
Forum Gold Medal
 
Join Date: Jun 2005
Location: Sacramento, CA
Posts: 516
Send a message via AIM to zarb
Default Re: Uneven Drone Bores

I think that this is what Pipedktr is looking for.
https://www.youtube.com/watch?v=jYacxZSRV9E

In my experience, there are multiple diameters of tuning chambers so a single reamer might not be the most useful.

So far, no one has mentioned that tight hemping can cause a wear spot inside the tuning chamber bore, exactly at the desired tuning height. Proper hemping reduces the creation of such wear, as it allows some cushion and reduces the forces that cause wear. Once the bore has such a worn spot, there isn't much recourse beyond similar repairs, short of lining the tuning chamber bore with brass or something.
__________________
The older I get, the more certain I am, that everything should be made from blackwood, beeswax, reeds, shellac and bits of string...
zarb is offline   Reply With Quote
Old 06-18-2017, 07:55 AM   #23
pancelticpiper
Holy smoking keyboard!
 
Join Date: Sep 2005
Location: WV to the OC
Posts: 9,311
Default Re: Uneven Drone Bores

Quote:
Originally Posted by pipedktr View Post
Please describe features and styles of the most effective reamers.
Please list a few best reamer brands and models.
Please provide names of reputable retailers and or online vendors.

Well there's not much in the way of "features, styles, and models." They're just a tool, they are what they are. I showed photos of what they look like in an earlier post.

I just picked up inexpensive ones online, they were made in India and cost around $20 each. They do the job just fine.

If you want to buy expensive ones, you can buy these from Grainger, a huge reputable firm

https://www.grainger.com/category/ad...catalog/N-13v4

The only decisions you need to make is how much you want to pay, and what sizes you'll need.

Measure the bores of the tone chambers you'll need to fix, and buy the reamer or reamers accordingly. Might need one for the bass, another for the tenor.

Each one has quite a bit of adjustment built in.
__________________
proud Mountaineer from the Highlands of West Virginia; Son of the Revolution and Civil War; first white settlers on the Guyandotte

Last edited by pancelticpiper; 06-18-2017 at 08:02 AM.
pancelticpiper is offline   Reply With Quote
Old 06-18-2017, 08:03 AM   #24
pancelticpiper
Holy smoking keyboard!
 
Join Date: Sep 2005
Location: WV to the OC
Posts: 9,311
Default Re: Uneven Drone Bores

Quote:
Originally Posted by zarb View Post
I think that this is what Pipedktr is looking for.
https://www.youtube.com/watch?v=jYacxZSRV9E
Yes exactly so!

As I said it's not rocket science.
__________________
proud Mountaineer from the Highlands of West Virginia; Son of the Revolution and Civil War; first white settlers on the Guyandotte
pancelticpiper is offline   Reply With Quote
Old 06-18-2017, 09:25 AM   #25
Leong
Holy smoking keyboard!
 
Join Date: Mar 2014
Location: Singapore
Posts: 1,141
Default Re: Uneven Drone Bores

The ABW dust should be saved for rainy-day repairs, right?
Leong is offline   Reply With Quote
Old 06-19-2017, 07:20 AM   #26
el gaitero
Holy smoking keyboard!
 
Join Date: Feb 2005
Location: Estados Unidos
Posts: 4,618
Default Re: Uneven Drone Bores

If you do elect to ream ....best to do both tenor tops if not mentioned here prior...carefully observing the final setting ( diameter) of the reamer after doing one top ..to ensure the other ends up the same.

The off round bore is a somewhat ellipse shape. The new bore radius ( after wood removal ) would be equal to the apogee of the ellipse.
el gaitero is offline   Reply With Quote
Old 06-20-2017, 09:10 AM   #27
Paul M Burke
Holy smoking keyboard!
 
Join Date: Apr 2006
Location: Waterford, Ireland.
Posts: 1,178
Default Re: Uneven Drone Bores

Quote:
Originally Posted by Leong View Post
The ABW dust should be saved for rainy-day repairs, right?
One could certainly keep it but I think repairs requiring it are perhaps a little more than DIY.

Before you ream the bore that is true make sure it is not already bigger than the one that needs truing. In fact if you only take the slight oval out of the chamber you should not have made any change to the bore.

Paul.
__________________
Against stupidity, the Gods themselves contend in vain.
Paul M Burke is offline   Reply With Quote
Old 06-20-2017, 10:48 AM   #28
el gaitero
Holy smoking keyboard!
 
Join Date: Feb 2005
Location: Estados Unidos
Posts: 4,618
Default Re: Uneven Drone Bores

..how to remove 'the oval' part (already a larger 'radius' than the bore ) without changing the bore? The expanding reamer blades cut 360 degrees around with each increasing twist before reaching the radius of the oval, albeit hopefully on a mm scale.
el gaitero is offline   Reply With Quote
Old 06-20-2017, 09:11 PM   #29
Paul M Burke
Holy smoking keyboard!
 
Join Date: Apr 2006
Location: Waterford, Ireland.
Posts: 1,178
Default Re: Uneven Drone Bores

Yes, obviously being of a larger radius is what makes it tight on the pin and obviously when tuning on the smaller radius of the bore the top falls down. So when reaming don't ream the small radius that is loose only the larger radius that is tight.

Paul

PS.

If you need to take off mm s maybe have a pipemaker look at them first.
__________________
Against stupidity, the Gods themselves contend in vain.
Paul M Burke is offline   Reply With Quote
Old 06-21-2017, 02:39 AM   #30
Toxpert
Forum Member
 
Join Date: Dec 2015
Location: St louis
Posts: 83
Default Re: Uneven Drone Bores

Regarding teflon tape...using this material makes for reduced friction. It's possible to over-hemp, over-tape the tuning pin. When that happens, excessive outward pressure can easily occur as the pin is pushed into the tuning chamber...creating splits in the tuning chamber under the ferrules.

Then you are starting to talk about repairs that require invisible whipping..etc.

I don't use teflon on my pipes ... it can create all sorts of mayhem.
Toxpert is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Silver Sponsor

All times are GMT -7. The time now is 09:23 PM.