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| | |-+  Tavor SAR Thin Buttplate
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Poll
Question: Is a thinner buttplate something you would buy if available? Please keep in mind as of now I'm looking at around $65 shipped and will most likely be made of fiberglass reinforced nylon.
Yes, the SBR version/without protrusion.
Yes, the NFA compliant/version with protrusion.
No, other reasons.
No, due to cost.  
No, due to design or materials.

Author Topic: Tavor SAR Thin Buttplate  (Read 2753 times)
Rick53
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« Reply #20 on: June 22, 2017, 04:20:19 PM »

Thin Buttplates make these unbelievably fast to recover for follow up shots. It might just be my imagination: But it feels like it doesn't bounce around as much. I definitely am not having to concentrate to stay inline with the sight. Something I was keenly aware of in the Stock Config: It's like having a different rifle. I have long arms. Yet it feels like I am much more one with the gun then prior. Even benching seems more natural.  

Welding isn't that big of deal either . Even if you have to send it out, it's just the barrel.

  I have been to a Public Range Twice since I had it welded. Waiting for the excavator to come make my range complain proof from the neighbors. Long story that would make most mad. Even had the NRA out to inspect My Backstop

 For some reason none of the Local Gun Stores Carry any Bullpups. SO it makes me the center of attention with this toy most haven't seen before. Surprising How many People haven't even heard of IWI-US aka Tavor or X-95 . Lots of AK guys : I mention this because the Range officer and even an NRA Deputy both held and Shot it. Neither brought up the OAL. Other then to ask if it was an SBR when we were first discussing what it was. Once I said no it's a 16 inch Barrel. Nobody said wait it's 1/2 inch to short unless you have that Muzzie welded up. Although several did say No Way !!!! Really Cool  

I feel better that mine is legal : However from what I observed even those who should know have no clue OAL wise.
« Last Edit: June 22, 2017, 04:21:59 PM by Rick53 » Logged
Jwill
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« Reply #21 on: June 22, 2017, 09:31:29 PM »

I went ahead and finished drawing the thin butt plate first this is what the finished product should look like I will have these 3d printed on the 1st for testing fit and ergonomics.

The top is 5/16" thick and the bottom is 3/16" thick.
All feedback is appreciated. 


* Tavor SBR Buttplate 1.JPG (104.59 KB, 1591x911 - viewed 67 times.)

* Tavor SBR Buttplate 2.JPG (119.31 KB, 1591x911 - viewed 61 times.)

* Tavor SBR Buttplate 3.JPG (112.29 KB, 1591x911 - viewed 46 times.)
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Jwill
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« Reply #22 on: June 23, 2017, 08:49:33 PM »

Finished the other one today I don't see making any changes until I have them 3d printed.
I know some people may wonder what the projected weight is according to Solid Works. SBR-1.2 oz, Extended-1.7 oz.

Also new pics of the Extended model.


* Tavor Buttplate 1.JPG (92.15 KB, 1488x942 - viewed 47 times.)

* Tavor Buttplate 2.2.JPG (98.39 KB, 1488x942 - viewed 46 times.)

* Tavor Buttplate 3.3.JPG (97.91 KB, 1488x942 - viewed 51 times.)
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Jwill
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« Reply #23 on: June 24, 2017, 04:13:24 AM »

I wasn't happy with the Extended butt plate I posted earlier so I made some changes let me know what you think.



* Tavor Buttplate Extended 1.JPG (99.26 KB, 1476x942 - viewed 63 times.)

* Tavor Buttplate Extended 2.JPG (98.27 KB, 1476x942 - viewed 54 times.)
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paulky_2000
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« Reply #24 on: June 24, 2017, 09:14:14 AM »

Looks pretty good!
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Jwill
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« Reply #25 on: June 25, 2017, 04:46:45 AM »

I ordered a 3d printed version from shapeways to test the fit and ergos so should have that next week. I am currently looking into having one made from CFF or carbon fiber filament. This is nylon with a carbon fiber filament embedded which can be 3d printed it seems promising cost wise for a limited production run basis. Once I have a model optimized for 3d printing I will probably place an order to test it.
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dntam
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« Reply #26 on: June 25, 2017, 09:45:01 AM »

How about stippling the rear surface or having heavy horizontal ridges? Not sure the "dots" will have enough traction.
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unsungboxer
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« Reply #27 on: June 25, 2017, 11:51:50 AM »

it would be awesome if someone could create an extending mechanism for the IWI thin plate.  OAL is measured at the extended position, so even if you run it collapsed you are good.  This would retain a factory look.

I was imagining a variation of a "knife hinge" on the buttpad's top pin.  Even if only the top extends out it should reach OAL

« Last Edit: June 25, 2017, 11:59:30 AM by unsungboxer » Logged
Jwill
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« Reply #28 on: June 25, 2017, 03:55:35 PM »

How about stippling the rear surface or having heavy horizontal ridges? Not sure the "dots" will have enough traction.
This could happen if there is an issue with slipping but I don't foresee it being a problem.

it would be awesome if someone could create an extending mechanism for the IWI thin plate.  OAL is measured at the extended position, so even if you run it collapsed you are good.  This would retain a factory look.

I was imagining a variation of a "knife hinge" on the buttpad's top pin.  Even if only the top extends out it should reach OAL

I had thought about this there just isn't a lot of room to work with and while I had an idea that could work I just think the added weight and cost would have been prohibitive.
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Jwill
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« Reply #29 on: June 28, 2017, 04:28:53 PM »

I have decided to add a poll to gauge interests.

I should have the first prototype in on the 1st and will post pictures.
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Jwill
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« Reply #30 on: June 30, 2017, 04:15:33 PM »

Well here it is ladies and gents there are some minor issues with design and aesthetics that being said, I will begin making the needed changes and I should be placing the order for the next prototype by Monday.

To address some questions that I'm sure will come up:
Nylon is clear, so these parts will be dyed black, the black you do see is carbon fiber however the next prototype and production version will have fiberglass and more of it which has a tan color but it will be dyed black.



* Prototype Picture.jpg (178.89 KB, 763x430 - viewed 136 times.)

* Prototype Picture 2.jpg (301.89 KB, 996x561 - viewed 109 times.)
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Jwill
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« Reply #31 on: July 04, 2017, 05:34:38 PM »

Worked on the model I will need to do one more prototype then I should be the final version. I may leave the holes for the take-down pin slightly undersized by .01 inch so the end user can make sure the fit is perfect. I added taller sections lengthwise to increase stiffness as I observed a slight amount of flex in the first prototype and previously angled edges have been rounded. The heptagon pattern on the face may not be on the final version.


* Tavor Buttplate Extended 3d Rev.1.JPG (111.47 KB, 1428x942 - viewed 56 times.)

* Tavor Buttplate Extended 3d Rev.1-2.JPG (174.65 KB, 1428x942 - viewed 54 times.)
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wabo100
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« Reply #32 on: July 04, 2017, 11:16:05 PM »

Looks nice
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Practicool
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« Reply #33 on: July 05, 2017, 05:58:08 PM »

Looking forward to it!
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Jwill
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« Reply #34 on: July 07, 2017, 03:02:50 PM »

Dyed the first prototype black which actually worked very well.
I also hope to have a quote for production from "Aluminum" within a week or two. The broken horizontal bar pattern used on the aluminum version will probably be on the production version regardless of material.


* Black Tavor Ext Buttplate.jpg (175.1 KB, 766x432 - viewed 88 times.)

* Tavor Ext cnc version 1.JPG (114.34 KB, 1472x942 - viewed 51 times.)

* Tavor Ext cnc 2.JPG (110.13 KB, 1472x942 - viewed 44 times.)
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paulky_2000
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« Reply #35 on: July 07, 2017, 07:25:25 PM »

I'm in.
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Jwill
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« Reply #36 on: July 17, 2017, 05:02:10 AM »

This project is still moving forward waiting on my second prototype which I should have this week. I am also waiting on the numbers for machining.
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Jwill
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« Reply #37 on: July 20, 2017, 01:31:16 PM »

Here is the second prototype (SBR version) fitted to a "legal length rifle" this will be sent out to a 3rd party for feedback to see what improvements are needed.





* SBR Prototype.jpg (93.73 KB, 397x324 - viewed 53 times.)
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Practicool
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« Reply #38 on: July 21, 2017, 04:53:31 PM »

Here is the second prototype (SBR version) fitted to a "legal length rifle" this will be sent out to a 3rd party for feedback to see what improvements are needed.





Looks great!  Count me in.
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Jwill
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« Reply #39 on: September 20, 2017, 07:10:59 AM »

I don't forsee getting these machined anytime soon so, I will now be giving out the .STL file (This will allow you to have it 3d printed) for the sbr buttplate for those who want it you can contact me via pm with your email so I can send it. I messaged the admin about obtaining permission to upload the file but I'm not sure how that will go. I will also be sending out the file for the extended version after a make some tweaks to the protrusion.

Edit:

It has come to my attention that this process is foreign to some people so I will provide this little guide.

1. Once I receive your email I will attach the file and send it to you.
2. Once you have the file you will need to get it printed via a 3d printing service that offers prints in nylon. If your concerned about strength some 3d printing services offer fiberglass filament this will make for a much stronger and stiffer part though it will cost more.
3. Now that you have found a 3d printing service you will need to send them the file, it will either need to be uploaded onto their site or emailed they should then provide a quote.
4. After you get your part back if it is still clear you may want to dye it there is plenty of information on this on the internet but it simply involves soaking it in hot water with the Rit Dye  color of your choice.

And that's it. 
« Last Edit: September 20, 2017, 10:47:58 PM by Jwill » Logged
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