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Double Rifles, Single Shots & Combinations >> Building Double Rifles & Gunsmithing

Setterguy
.275 member

Reged: 09/06/11
Posts: 78
Loc: Washington, USA

Re: Winchester 21 DR in 45-70
14/01/13 11:09 AM

After a considerable delay I am back with some updates on my Winchester 21 DR 45-70 project. Since my last post (last year) I have completed all the 3-D scans of the prototype receiver, trigger plate, top lever, monobloc, and forearm shoe. We have just verified and modified the CAD data to input to the CAM program for the receiver. It turns out that the CAD data was prepared expecting a 4 axis CNC milling machine while my machinist only has a 2 axis machine. This caused considerable delay in rewriting the program since the milling machine tried to pick up data inside the block of steel and would plunge the bit into the metal causing quite a mess. Anyway, this is something for you to keep in mind if you try this. The learning curve has been steep for me but I think I am finally ready to finish milling out the receiver. The first thing we did was extract the data for the outline of the receiver being careful to be exact on the water table and the radius for the hinge pin. We set up the EDM wire cutter to cut out two receivers at once (see pictures below). You can see from these pictures we are literally starting with a solid block of 4340 steel alloy. The wire cutter saves a tremendous amount of milling time and does a great job on the flat or surfaces that require a precise radius. I highly recommend you use this step first.

EDM tank. You can't see the metal block but it is in a bracket below.

Tank emptied with one cut completed

Both cuts made from block of 4340 steel alloy.

Receivers as released from the initial EMD cut.

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Subject	Posted by	Posted on
Winchester 21 DR in 45-70	Setterguy	14/01/12 11:43 AM
Re: Winchester 21 DR in 45-70	twobobbwana	15/01/14 11:46 AM
Re: Winchester 21 DR in 45-70	Ckhobart	01/02/14 01:03 PM
Re: Winchester 21 DR in 45-70	Setterguy	17/02/14 02:19 PM
Re: Winchester 21 DR in 45-70	twobobbwana	18/02/14 12:24 PM
Re: Winchester 21 DR in 45-70	Setterguy	18/02/14 01:03 PM
Re: Winchester 21 DR in 45-70	Setterguy	20/02/14 02:34 PM
Re: Winchester 21 DR in 45-70	twobobbwana	20/02/14 04:43 PM
Re: Winchester 21 DR in 45-70	Shotgunlover	21/02/14 08:05 AM
Re: Winchester 21 DR in 45-70	Dumprat	23/02/14 03:52 AM
Re: Winchester 21 DR in 45-70	Setterguy	23/02/14 10:59 AM
Re: Winchester 21 DR in 45-70	Dumprat	23/02/14 11:52 AM
Re: Winchester 21 DR in 45-70	twobobbwana	24/02/14 11:47 AM
Re: Winchester 21 DR in 45-70	Ckhobart	13/03/14 05:21 AM
Re: Winchester 21 DR in 45-70	Setterguy	02/05/14 02:54 PM
Re: Winchester 21 DR in 45-70	Setterguy	02/05/14 03:21 PM
Re: Winchester 21 DR in 45-70	Shotgunlover	03/05/14 03:35 AM
Re: Winchester 21 DR in 45-70	Setterguy	03/05/14 07:43 AM
Re: Winchester 21 DR in 45-70	Setterguy	05/05/14 01:10 AM
Re: Winchester 21 DR in 45-70	twobobbwana	20/10/14 12:06 PM
Re: Winchester 21 DR in 45-70	twobobbwana	13/03/15 12:04 PM
Re: Winchester 21 DR in 45-70	CHAPUISARMES	14/03/15 08:27 AM
Re: Winchester 21 DR in 45-70	twobobbwana	01/10/15 11:03 AM
Re: Winchester 21 DR in 45-70	Setterguy	23/12/15 03:20 PM
Re: Winchester 21 DR in 45-70	DarylS	24/12/15 05:19 AM
Re: Winchester 21 DR in 45-70	Setterguy	24/12/15 11:21 AM
Re: Winchester 21 DR in 45-70	twobobbwana	11/01/16 11:51 AM
Re: Winchester 21 DR in 45-70	Setterguy	28/03/16 06:03 AM
Re: Winchester 21 DR in 45-70	Birdhunter50	29/03/16 02:09 AM
Re: Winchester 21 DR in 45-70	Setterguy	29/03/16 06:44 AM
Re: Winchester 21 DR in 45-70	Setterguy	29/03/16 11:13 AM
Re: Winchester 21 DR in 45-70	twobobbwana	29/03/16 11:50 AM
Re: Winchester 21 DR in 45-70	Setterguy	03/04/16 10:23 AM
Re: Winchester 21 DR in 45-70	Waidmannsheil	03/04/16 05:10 PM
Re: Winchester 21 DR in 45-70	4al2	03/04/16 09:26 PM
Re: Winchester 21 DR in 45-70	Setterguy	04/04/16 01:02 AM
Re: Winchester 21 DR in 45-70	Setterguy	09/04/16 11:35 AM
Re: Winchester 21 DR in 45-70	4seventy	14/04/16 04:35 PM
Re: Winchester 21 DR in 45-70	Waidmannsheil	15/04/16 06:32 AM
Re: Winchester 21 DR in 45-70	twobobbwana	06/06/16 10:45 AM
Re: Winchester 21 DR in 45-70	twobobbwana	02/09/16 10:37 AM
Re: Winchester 21 DR in 45-70	twobobbwana	18/11/16 11:31 AM
Re: Winchester 21 DR in 45-70	twobobbwana	31/01/17 11:44 AM
Re: Winchester 21 DR in 45-70	Setterguy	28/04/17 02:27 PM
Re: Winchester 21 DR in 45-70	Setterguy	01/05/17 07:44 AM
Re: Winchester 21 DR in 45-70	twobobbwana	02/05/17 02:41 PM
Re: Winchester 21 DR in 45-70	Setterguy	02/05/17 03:07 PM
Re: Winchester 21 DR in 45-70	CptCurl	03/05/17 09:12 PM
Re: Winchester 21 DR in 45-70	Waidmannsheil	01/05/17 07:00 PM
Re: Winchester 21 DR in 45-70	Setterguy	02/05/17 01:51 PM
Re: Winchester 21 DR in 45-70	Sarg	14/01/12 12:33 PM
Re: Winchester 21 DR in 45-70	tinker	14/01/12 02:22 PM
Re: Winchester 21 DR in 45-70	Setterguy	29/01/12 02:52 PM
Re: Winchester 21 DR in 45-70	Setterguy	30/01/12 02:14 AM
Re: Winchester 21 DR in 45-70	Setterguy	14/01/13 11:09 AM
Re: Winchester 21 DR in 45-70	Setterguy	16/01/13 03:45 PM
Re: Winchester 21 DR in 45-70	Setterguy	14/01/13 11:23 AM
Re: Winchester 21 DR in 45-70	Setterguy	16/01/13 03:50 PM
Re: Winchester 21 DR in 45-70	Setterguy	18/01/13 08:14 AM
Re: Winchester 21 DR in 45-70	TomN	18/01/13 10:16 AM
Re: Winchester 21 DR in 45-70	twobobbwana	18/01/13 12:08 PM
Re: Winchester 21 DR in 45-70	Setterguy	18/01/13 02:57 PM
Re: Winchester 21 DR in 45-70	Birdhunter50	19/01/13 01:13 AM
Re: Winchester 21 DR in 45-70	Setterguy	22/01/13 07:33 AM
Re: Winchester 21 DR in 45-70	Matabele	22/01/13 05:36 PM
Re: Winchester 21 DR in 45-70	AkMike	23/01/13 07:52 AM
Re: Winchester 21 DR in 45-70	twobobbwana	21/02/13 01:07 PM
Re: Winchester 21 DR in 45-70	Setterguy	21/02/13 02:02 PM
Re: Winchester 21 DR in 45-70	Setterguy	22/02/13 04:20 PM
Re: Winchester 21 DR in 45-70	Setterguy	22/02/13 04:25 PM
Re: Winchester 21 DR in 45-70	2152hq	23/02/13 04:42 AM
Re: Winchester 21 DR in 45-70	Setterguy	23/02/13 08:08 AM
Re: Winchester 21 DR in 45-70	2152hq	23/02/13 09:27 AM
Re: Winchester 21 DR in 45-70	Setterguy	05/03/13 02:35 PM
Re: Winchester 21 DR in 45-70	doubleriflejack	07/03/13 08:22 AM
Re: Winchester 21 DR in 45-70	Setterguy	14/03/13 02:06 PM
Re: Winchester 21 DR in 45-70	Setterguy	14/03/13 02:24 PM
Re: Winchester 21 DR in 45-70	twobobbwana	15/03/13 11:58 AM
Re: Winchester 21 DR in 45-70	Setterguy	15/03/13 03:25 PM
Re: Winchester 21 DR in 45-70	twobobbwana	15/03/13 05:11 PM
Re: Winchester 21 DR in 45-70	Setterguy	16/03/13 02:17 AM
Re: Winchester 21 DR in 45-70	aromakr	16/03/13 06:50 AM
Re: Winchester 21 DR in 45-70	Setterguy	16/03/13 08:27 AM
Re: Winchester 21 DR in 45-70	aromakr	16/03/13 10:59 AM
Re: Winchester 21 DR in 45-70	twobobbwana	18/03/13 02:23 PM
Re: Winchester 21 DR in 45-70	twobobbwana	22/04/13 10:42 AM
Re: Winchester 21 DR in 45-70	Setterguy	28/04/13 02:15 PM
Re: Winchester 21 DR in 45-70	twobobbwana	29/04/13 10:42 AM
Re: Winchester 21 DR in 45-70	twobobbwana	13/06/13 01:42 PM
Re: Winchester 21 DR in 45-70	Ckhobart	28/06/13 07:24 AM
Re: Winchester 21 DR in 45-70	Ckhobart	29/07/13 04:09 PM
Re: Winchester 21 DR in 45-70	twobobbwana	09/09/13 03:42 PM
Re: Winchester 21 DR in 45-70	Setterguy	14/01/14 03:48 PM
Re: Winchester 21 DR in 45-70	ad_bfl	07/03/13 03:45 AM
Re: Winchester 21 DR in 45-70	Setterguy	21/02/13 03:17 PM
Re: Winchester 21 DR in 45-70	twobobbwana	21/02/13 02:42 PM
Re: Winchester 21 DR in 45-70	twobobbwana	18/01/13 04:42 PM
Re: Winchester 21 DR in 45-70	DarylS	14/01/13 11:30 AM
Re: Winchester 21 DR in 45-70	twobobbwana	14/01/13 12:00 PM
Re: Winchester 21 DR in 45-70	Matabele	14/01/13 05:15 PM
Re: Winchester 21 DR in 45-70	Setterguy	15/01/13 10:54 AM
Re: Winchester 21 DR in 45-70	Setterguy	16/01/13 09:57 AM
Re: Winchester 21 DR in 45-70	twobobbwana	16/01/13 12:08 PM
Re: Winchester 21 DR in 45-70	DarylS	15/01/12 05:42 AM
Re: Winchester 21 DR in 45-70	Setterguy	16/01/12 02:18 PM

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