Guide for Pull-Thru Cleaning System

[Nosnil22]

Well, here's the drawing I came up with for a tool to keep a Patchworm (or similar) pull-thru cleaning string centered as it's drawn through the bore.



It will simply fit right over the end of a 0.920" barrel up to the shoulder within the tool. The 1/2" diameter space above this allows room for the button and patch once it exits the bore.
Whether this is necessary or not remains to be seen. If its possible for dislodged fouling to get stuck on the trimmer-type line, I can see where you wouldn't want to drag that along the edge of the crown at a sharp angle.
The 0.090" exit of the tool (0.010" larger than the line) ensures that this won't happen.





I'll have about 6 extra, if anyone is interested in trying one out.

Cheers,
Dave

[crackedcornish]

looks very interesting to me

I always spend extra care that I'm pulling straight on the line, so it doesn't drag across the edge of the muzzle at an angle, but it seems this would take out a lot of that worry

[Nosnil22]

I'll get some photos of this in use tonight to make sure everything works and lines up correctly.

Dave

[HAWKEYE WIZARD]

Nosnil22,
I'll take one!!!! Just let me know how much it costs and where to send the payment.
Hawkeye Wizard

[Nosnil22]

Originally Posted by HAWKEYE WIZARD

Nosnil22,
I'll take one!!!! Just let me know how much it costs and where to send the payment.
Hawkeye Wizard

Thanks, I'll send you a PM.
For anyone interested, $10 + $1.50 shipping

Dave

[Nosnil22]

Here's some photos of this in use:

First, get the trimmer line started down the barrel:


Feed the line through the guide and then place it over the muzzle:


The button and patch end up in the 1/2" diameter recess after being pulled through:


The guide fit perfectly on my ER Shaw barrel. Just snug enough that it won't fall off.

Here it is on my wife's Feddersen:


And on my KIDD stainless: (Same fit on both of these as well)


The recess area (where the button ends up) collects the tiny bits from the bore that would otherwise fall on the bench, unnoticed.
I can see where these may be the very things to guard against being drug along the edge of the crown.
For the extra 3 seconds it takes to use this, I will continue to do so.
BTW, the inside of the guide cleans up easily with a Q-Tip.

lilski, thanks again my friend for making this happen!! You da man!

Dave

[Pulpit]

Very cool Dave!!! You are a man of many (great) talents.

Please pm me your address and I'll take one!

[Nosnil22]

Originally Posted by Pulpit

Very cool Dave!!! You are a man of many (great) talents.

Please pm me your address and I'll take one!

You got it buddy! PM on the way.
Yours is the 3rd (check that, 4th) spoken for already. I'm amazed.

Cheers,
Dave

[Blacknboostn]

Wow that looks awesome man! Nice job!!!


Sub MOA or bust!!!

[CBF Gettysburg]

Put me down for one! Please PM me your address. Thanks in advance.

[Nosnil22]

Originally Posted by Blacknboostn

Wow that looks awesome man! Nice job!!!


Sub MOA or bust!!!

Thanks Tyler, much appreciated!

Originally Posted by CBF Gettysburg

Put me down for one! Please PM me your address. Thanks in advance.

You bet! PM on the way.

[DrGunner]

Nice work, Dave. Any way you can design a step down into it so it can also fit varmint/heavy taper barrels, or would it be better to just make a separate device?

I didn't have a good mental pic of what you had in mind until I saw this thread and I like what you're doing here. I can get you measurements for the barrel diameter that I'm thinking of later tonight.

DrGunner

[Nosnil22]

Originally Posted by DrGunner

Nice work, Dave. Any way you can design a step down into it so it can also fit varmint/heavy taper barrels, or would it be better to just make a separate device?

I didn't have a good mental pic of what you had in mind until I saw this thread and I like what you're doing here. I can get you measurements for the barrel diameter that I'm thinking of later tonight.

DrGunner

I think a separate device is in order to keep costs down. We talked about creating inserts for the original, but that adds complexity. Please do send me your measurements.

Cheers,
Dave

[BHPete]

This is great. I like tools such as this.

I machined one of these this morning from a piece of 1.5" dia. Delrin I have in the shop. It's a fun little project.

It needs a name like - Dave's (Patch) Drawing Device - only better.

[Nosnil22]

Super nice BHPete! I really like the color of the Delrin.
I forgot to mention before that mine are made from easy to machine, chemical-resistant polypropylene. (McMaster Carr)

Cheers,
Dave