Case Trimming - Poor Man's Giraud Trimmer

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Doublehelix

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I know case trimming is a personal choice, and folks are very attached to their chosen method.

I have been looking at the Giraud trimmers for a long time with envy, but could not justify the almost $500 price tag. I have a Hornady cam lock trimmer, and those are fine I guess, but I am lazy by nature, and I wanted something that did not require as much manual intervention. I do have the powered screwdriver chuck adapter which adds a little automation, but it is still not a Giraud!

Also, as I get older, arthritis is starting to rear its ugly head in my hands and fingers, so I wanted something easy to deal with without having to juggle a cordless drill in one had and a case in the other.

I got this idea from someone on another forum, so I cannot take credit for this, but basically what I am in the process of creating is a "poor man's Giraud Trimmer" for about $160.

Giraud makes a device called a "Tri-Way Trimmer", which operates similarily to the World's Finest Trimmer (WFT). It is basically the guts of the Giraud Trimmer in a small device that attaches to a cordless driver like a WFT:

http://www.giraudtool.com/Tri Way Trimmer.htm

This like gadget is about $100, and is appealing because it uses the Giraud technology in a less-expensive package.

Now the question is how to best power this device.

One suggestion is to pickup a small drill press from Harbor Freight for about $60, and you have a case trimmer that can also double as a drill press when not used for case trimming. I like that idea a lot, but space constraints on my loading bench made me want to look to other ideas.

The answer came by way of another Harbor Freight device, a buffer unit (Harbor Freight item # 94393):

ATTACH]


This guy sells for $45, but with the usual Harbor Freight coupons, I picked it up for about $35. The specs were perfect for what I needed, 1/2 HP motor that spins at 3,450 RPM.

The arm shafts on this guy are 1/2" in diameter, and the shaft on the Giraud Trimmer is 3/8", so I needed a coupler that goes from 1/2" to 3/8". Voila! Amazon to the rescue:

https://smile.amazon.com/gp/product/B003XHG7WC/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

This piece joins the shaft of the Harbor Freight buffer to the shaft of the Giraud Trimmer. It was a bit pricey at $33, and maybe if I shopped around, I could find something less expensive, but I was excited to find what I needed and pulled the trigger.

The next step was to cut off the threads one of the buffer shafts. I needed to use the side that would spin the Giraud Trimmer counter-clockwise when looking straight into the end of the trimmer, so this meant I needed to cut off the right-hand set of threads on the trimmer. I used my angle grinder with a metal cutting blade, and it took me literally 50 seconds to cut it off. (I videotaped it, and the entire video was 1:04, which included picking up the tool, starting and stopping the video, etc.)

Here is the shaft that needed cutting. I left the nut on to use as a guide to keep my cutting blade straight:

Case%20Trimmer%201_zpsflco6xrz.jpg

And then 50 seconds later, I had this:

Case%20Trimmer%202_zpsccyznct4.jpg

I turned on the buffer and let it spin, and then grabbed a fine-toothed file, and chamfered the end of the shaft for about 60 seconds or so:

Case%20Trimmer%203_zpsxfxuua4o.jpg

Perfect! Smooth as a baby's bottom, and ready to accept the coupler.

Case20Trimmer204_zpsz5i6gpum.jpg

The coupler fits perfectly (thank goodness!), and spins true without any noticeable vibration or wobble, which is why I needed to cut off the threads.

Case20Trimmer206_zps7wbtiyj8.jpg

Case%20Trimmer%205_zpst6hqkgbb.jpg

Now I just need to order the Giraud Tri-Way Trimmer and I should have a "Poor Man's Giraud Trimmer" completed for about $160. This idea should work with other trimmers as well, such as the WFT, but I do not know the shaft diameter of the WFT. As mentioned, the diameter of the Giraud trimmer shaft is 0.375" (3/8"), and it looks similar to the WFT, but without having one in front of me or without contacting the manufacturer (like I did with Giraud), I have no idea if they are the same or not. The good news is that there are couplers for a lot of different sizes, so you should be able to find something.

One note of caution: I do not assume any liability if you try building this or something similar. You should only attempt this if you are a professional or have a professional available that can do the work for you. There is a very clear and succinct warning on the front of the buffer that states that you should not use "unintended accessories" on the buffer. I would say that this qualifies as an unintended accessory! The drill press is probably a better solution for most people. Also, as soon as you cut off the shaft, you have voided your warranty. I made sure that my buffer ran flawlessly for a long time before cutting. I have bought things from HF before and end up returning about half of them due to poor QC.

Here is the warning:

Case%20Trimmer%207_zpsrbjklnqq.jpg


I will order the actual trimmer head soon. My wife has our finances on a short leash during the Christmas season, so I will probably wait until I get paid again before hiding this purchase... er.... I mean "BUYING" a trimmer head! :rofl:

Once again: Do not attempt this at home kids, it could be dangerous or even fatal!!!
 

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Also, as I get older, arthritis is starting to rear its ugly head in my hands and fingers, so I wanted something easy to deal with without having to juggle a cordless drill in one had and a case in the other.

I'm getting near that same boat.

Contact your congressman. Maybe they can get the high-end Giraud WFT approved for MediCare disbursement for eligible retirees in one last ditch effort to spend money !! :p

Thanks for passing on the trimmer info. That looks slick.
 
I'm getting near that same boat.

Contact your congressman. Maybe they can get the high-end Giraud WFT approved for MediCare disbursement for eligible retirees in one last ditch effort to spend money !! :p

Thanks for passing on the trimmer info. That looks slick.

Hey! That is what I am talking about!!! Sounds like I am *entitled* to have one, and the government should pay for it!!!

Another thing that I did not mention in my original post is the the Giraud Tri-Way trimmer also chamfers and deburrs while trimming, so once the case leaves the trimmer, I have some primer pocket work that may need to be done, but other than that, no dealing with the case mouth. I know a lot of other trimmers do this as well, but surprisingly, not all.
 
Giraud Tri-Way trimmer also chamfers and deburrs while trimming

The Gracey does as well. It’s not as easy to get set up as the Giraud but it’s cheaper. And I only use it for 223 so once I get it set it’s fine until I have to sharpen the cutters. About once a year.

Also, I have to say, when I called them to ask about cutters and case holders they were super helpful and very nice to deal with. Important to me.
 
That's thinking outside the box . I hope it works for you , let us know .
 
I just realized that I never actually updated this thread with the final results.

I was able to get a buddy of mine to fabricate an "L" shaped bracket for me out of stainless steel so I can orient the trimmer either vertically or horizontally, just like the "real Giraud" trimmer. I prefer the vertical orientation personally, and I think that is what Giraud actually recommends.

We put some rubber feet on both "ends" for stability, and I added a rubber pad on the end plate to help with any vibrations.

Honestly, a wooden frame would have worked just as well, and that is what I had planned until my buddy offered the SS version. I was not going to refuse of course as the SS version looks pretty cool!

Bottom line: It works perfectly! I love it! It actually turned out better than I expected, and for $165 (plus the bracket that I got for free), it was a steal price-wise compared to the $500 Giraud, and honestly, it was pretty easy to make. It took me about 60 seconds to cut off the shaft on each side, and another 2 minutes or so to file the shaft smooth, and really, that was it other than bracket.

(I have since added some small rubber plugs to cover the ends of the bolts that stick through the frame. It looks better, and there are no rough edges.)

Pictures:







Here you can see the slots that we cut in the bottom of the bracket to allow for adjusting the buffer to the correct position:

 
That's a beautifully completed project, and I'm in really awe of the concept and quality of the execution.

But one thing bothers me. That is probably a 1700 rpm motor, and the cutter head is held onto the shaft by several mechanically secured joints. Now, I agree you've used a very high quality coupling, but if one joint should ever loosen up that thing could fly apart in no time.

There really doesn't seem to be a good way to install a safety guard on there, like the original grinding stone had. So what I suggest is that you operate this motor with a momentary foot switch. That way if trouble is suspected you can step away and the RPM will immediately start to drop.

Just an idea.

https://www.amazon.com/uxcell-a1310...F8&qid=1485828909&sr=1-2&keywords=foot+switch
 
But one thing bothers me. That is probably a 1700 rpm motor, and the cutter head is held onto the shaft by several mechanically secured joints. Now, I agree you've used a very high quality coupling, but if one joint should ever loosen up that thing could fly apart in no time.

The label in OP's pic #1 says 3450 rpm.

FWIW, Harbor Freight says that's a 1/2 HP motor. Giraud’s power trimmer uses a 1/8 HP, 3000 rpm motor to drive the trimmer through a belt and pulleys. Best I can figure, the trimmer head spins at about 2200 rpm or so. I don't know if that's significant or not, but thought it was an Interesting comparison.
 
When I spoke with the folks at Giraud, they told me the trimmer head on their unit spins at 3,000 RPM, now maybe they were mistaken and were thinking motor speed, but when I talked to them about my motor spinning at 3,450, they thought it was fine. It seems to work well...

I love the idea about a momentary switch, and will order one post haste. I also thought about a variac to control the motor speed, but as mentioned, it seems to work well as-is.
 
When I spoke with the folks at Giraud, they told me the trimmer head on their unit spins at 3,000 RPM, now maybe they were mistaken and were thinking motor speed, but when I talked to them about my motor spinning at 3,450, they thought it was fine. It seems to work well...

I love the idea about a momentary switch, and will order one post haste. I also thought about a variac to control the motor speed, but as mentioned, it seems to work well as-is.
All I know is how my Giraud is. Label on the motor says 3000 rpm. The trimmer head pulley is larger than the motor pulley, so the trimmer spins slower. He may have changed the design since I bought mine in late 2011. But, if your custom rig works, it works. Can't argue with success. Kudos.
 
Just a FYI, do not confuse the Trimmer the OP is using with the EZ Trim It II unit, I shall leave the comments at that. Other than it is well made, but I just could not get the damn thing to work and was a PITA.:)

I tried one and lets just say I no longer have it. I still have the WFT

I also have the RCB unit with the 3 way cutter head hooked up to a corded drill and it works like a charm. The 3 way cutter head is expensive but worth it,

I hate trimming brass.
 
All I know is how my Giraud is. Label on the motor says 3000 rpm. The trimmer head pulley is larger than the motor pulley, so the trimmer spins slower. He may have changed the design since I bought mine in late 2011. But, if your custom rig works, it works. Can't argue with success. Kudos.

Well, that is pretty definitive then, the trimmer is definitely slower than 3,000 no matter what the person at Giraud told me. Like I said, maybe they were mistaken or maybe I misunderstood. I may look into a variac to slow the motor speed. I will talk to my electrician buddy and see what he says...

Thanks for the clarification.
 
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