GunLab (KnownHost)

Installing the cnc router boot.

Chuck — Tue, 05 May 2026 16:52:27 +0000

Through out the design of the cnc router boot I wanted it to be easly removable to allow for tool touch off and replacement. The only easy way to do that is with magnets. I used the second test piece that I had added cardboard spacers and then magnets that I epoxy on to the router housing frame.

The magnets provide no interference to changing out the router.

Then magnets were epoxy into the boot.

The magnets allow the housing to stay attached to the frame.

With the hose attached hopefully this will all work.

The only issue I can currently see is possibly some drag on the line during operation.

Currently I am working on a spring design to hold up the hose but not interfere with the movement of the router gantry.

Finished the dust collector boot for the cnc router

Chuck — Sat, 02 May 2026 16:38:19 +0000

I completed the design of the cnc router dust collector boot if Fusion 360.

I printed it on the Bambu P2S 3D printer. It took 14 hours to complete the print but it did come out very nice.

it print has a great deal of support that will need to be removed.

A quick shot of the boot after cleaning and with the brushes installed.

If I ever needed to make another I would do it in two parts and held together with magnets.

Now to install it on the cnc router.

Getting close to finishing the cnc router

Chuck — Fri, 01 May 2026 20:34:21 +0000

The cnc router is finally almost finished. The discharge piping is in and going outside to the dust collector. all the adapters are made for the inside of the cabinet and the piping inside of the building.

The dust collector boot has been modeled and is currently set up for the hose that I used when the house vacuum was installed.

The noise was awful so I changed it out to large dust collector that I had setting around that is next to the house one. As with everything else none of the dust collector system matched up with the standard piping that is available at Home Depot. Adapters were printed out on my Bambu P2S 3D printer.

The cabinet has been enlarged so now nothing hits the cabinet while I operate the cnc router.

The coupling through the cabinet is with a 2″ pipe flange, which is actually not 2″ so another adapter had to be made.

the old hose is just 1″ in diameter.

However, if the hose will not work I can always use a larger vacuum hose.

All I have to do is print out a new boot and change the flange on the cabinet.

I started designing the boot with a couple of test design pieces,

I was able to make change the design to allow for proper magnet placement and fit the router perfectly. This is the new design.

The slot around the bottom is for the brushes an the magnet holes are twice the depth. This so when a set of magnets are epoxied on the aluminum router head housing the boot will set flush. The depth of the boot will still allow for a tool change and if necessary the boot can easily be removed.

Getting closer to finally getting the cnc router back on line.

Shop Update- The CNC Router

Chuck — Fri, 03 Apr 2026 17:06:41 +0000

This is a saga of the CNC router. The router was built here in the shop and it was used to make the stock and handguards for the VG1-5. 5 years ago I was running a batch of parts and hit an over travel stop. When this happen I just shut off the machine as something had come up and I could not finish the parts run. When I got bad to working on the router I could not get the machine to do anything. I kept getting this alarm code.

So every week or so I would try and get the machine o run. I checked the limit switches, got on to boards to see if someone else had a similar issue and tried to clear the computer. Nothing worked, nothing. It was at this point that I decided to correct the reason I got the problem in the first place. I started building a cabinet around the router and install a built in dust collector system.

I did the build with 80-20aluminum extrusions and plexiglass. Both of these I had from recycle and demo jobs.

So I carefully design the cabinet and built it to enclose the router.

I put door and access points to allow me to change and test tools and touch them off. It also allows for material to be set up and product to be taken out. I finished the top cover

with a dust collector access port. Now came time to actually get the cnc router working again. Last week I traced and tested every wire and switch. I found the issue and the router is back up and working.

The big mistake came when I started to operate the machine and realized that I made the cabinet to small.

You can see that I did not leave enough room for the X and Y axis cable rack.

The time has come for me to re-build the cabinet. 2″ in the Yaxis and 7″ longer in the X axis.

Some days you just wake up on the wrong side of the table. Back to the design board and fix it to allow me to go back to using it.

The Mauser 1917 trench carbine receiver

Chuck — Tue, 24 Mar 2026 15:03:08 +0000

I have reverse engineered most the lower receiver in Fusion 360 and will print the first model this week. This is the first print so I can test my solid model. Using the Bambu P2S printer I will print a 3D model. There are a number of modifications that will needed to be made, but I can check my initial model.

The 3D print is completed and as suspected there are a couple of changes that need to be made.

But the overall model is on.

The issues that I have found deal with the measurements and using photos that were not an exact 90 degrees. Not comes the fun part of making minor changes to correct the issues.

More on the Sudanese AR-10

Chuck — Fri, 20 Mar 2026 17:25:45 +0000

With the last test model machined I started putting the lower together and a number of issues were noted. The receiver dimension is correct for the holes, magazine release, magazine well and overall length and width. the magazine button and release lever are not deep enough.

These are the noted problems.

The first one is a very slight radius issue on the rear of the receiver just prior to the buffer tube

The second issue concerns the magazine release lever. this needs to be cut deeper to allow proper fit.

The third issue deals with the hole for the selector. There is a slight inset in the receiver to all the selector to set properly and this needs to be cut in. This is how it looks on the original.

And you can see it is missing on my test receiver.

The last issue is raised portion of the receiver around the magazine release. On my receiver it extends to far over and does not line up with the upper receiver properly.

With some minor changes to the machining program I hope to correct these issues.

OP. 4 on the Sudanese AR-10 lower

Chuck — Mon, 09 Mar 2026 16:09:52 +0000

The 4th op is to thread the rear of the receiver for the buffer tub and to drill the hole for the rear take down detent pin and spring and the stock alignment hole. The holes were first cut to the proper size then a thread mill with the proper pitch.

threaded the correct number of threads with the proper pitch.

To accomplish this step a fixture plate was design and machined.

And orientated to hold the part in the correct position.

After machining the actual buffer tube was installer to verify proper fit

The completed receiver is getting closer

Mauser V9000 trench rifle

Chuck — Wed, 04 Mar 2026 03:21:28 +0000

While doing research on the 1917 trench carbine I came across a rifle that I have never seen or even heard of. The V9000. There is a video on YouTube posted by LAI Publications. I just fell for this cute carbine.

It also dissembles and the stock comes off.

There was a print of it taken apart.

I thank LAI publications for posting about this rare and interesting weapon. I decided that I need one in my collection. There is no chance of buying one and it is full auto so actually making one that is exact is out of the question. However I can make a semi auto one. As with all of my projects I need to design it from scratch. With that in mind I have started just that, but I am making a few changes to the design. First I will make it in 9mm and not in 7.62×25 Mauser. Second, I am going to make it to use a different magazine. I have never been a fan of the Mauser style magazine. they are expensive, a number of the ones I have do no fit properly and they are hard to fine.

My favorite magazine for my Broomhandle projects is the Finnish M/20 smg magazine. They are available at Apex gun parts.

It is a great magazine that I will cut down to 25 rds.

The first step was to design the lower receiver to use a M/20 magazine. I started this process with using a cut Chinese Schnellfeuer lower.

I was able to make a basic solid model but with the proper dimensions for the M/20 magazine.

There is a number of features missing from this model but, it is just a starting point. So I printed it out on m Bambu P2S 3D printer.

I was able to check to see if my magazine housing was dimension properly, and it was.

The next print will have the magazine release button. The rear of the receiver needs to be corrected. the bottom of the receiver is to thick and it receiver needs to have internal dimensions reduced. I am currently working on the second model receiver and should have it completed by the end of next weekend. I also need to add the dove tail slot in the front of the receiver

1917 trench carbine 3D prints

Chuck — Sat, 28 Feb 2026 23:01:26 +0000

With the new Bambu P2S printer here I decided to start printing out some of the components of the 1917 trench carbine to verify the design and measurements.

The first part that I printed out and checked is the fire control group. I Then used Bambu studio to do a slicing program on it. It was down loaded and printed out

After it was printed out it was checked with actual components to verify proper fit up.

There are a few minor changes that need to be made, but so far it does not look to be out of spec.

Why it is necessary to run a test part after changes to the program

Chuck — Fri, 27 Feb 2026 23:15:29 +0000

A number of changes were made to the Sudanese AR-10 lower receiver. Selector stops were added and a new profiling program was used to allow for a better finish around a few areas of the receiver. Then a second lower was machined out of 6061 to verify the changes. During the process of machining a few issues were notes. The first is that with the new tool path it left on a thin section of metal.

The magazine release button also changed from an inside cut to and outside cut.

The other issue that was found was that the selector stops were located in the wrong spot.

All the issues have been corrected and checked. Next is to design a logo and write the printing program then start making Sudanese lower semi receivers.