Some of my followers will remember that I have had many, many issues with my lathe. Recently I have managed (with not a little help) to get it back into working order! There were quite a few jobs waiting for this, one of which was the MG08/15.
This required a hop-up chamber. I turned this from a piece of 20mm aluminium. One hole drilled through the centre all the way kept everything aligned as I bored out the front and back to their appropriate diameters to take the nozzle and barrel.
I then filed down the top create a flat surface, then drilled a feed hole to allow BBs to feed into the chamber and another hole that was tapped to adjust the hop-up. A second screw holds the barrel stable.
I attached two barrel spacers to the barrel to centre it in the outer barrel. This done I attached the gearbox to it. I could line up the gearbox mounting plate with the holes used to attach it to the frame and marked out their locations.
These could then be drilled and fitted permanently.
More to follow soon! If this post has inspired you to want a gun of your own, do drop us a line on firstname.lastname@example.org to discuss or find us on Facebook.
So, this is what the MG08/15 looks like now! As you can see there are a few changes. The main development of importance as far as I am concerned is the addition of the bipod. This gun finally stands up on its own!
A close-up of the bipod mount in progress. A series of disks keeps friction to a minimum. I was thinking of using 6mm bearings but it runs smoothly as-is. Given the gun will be used in (very dusty) South Africa I reckoned on simpler being better.
The bipod itself is folded 2mm steel sheet. Designed in CAD and laser cut, I folded it by hand. I’ve never been so hot in the workshop! This was then welded to the bottom of the pivot mechanism.
Woodwork is the other obvious development. Took delivery of some lovely Trend router bits that I have had my eye on for some time and set to work on the buttstock (rough cut above). Using the convex curve of a Roman Ogee bit I rounded off the faces other than the front and back.
Curved faces and Roman Ogee bit in the router.
Another treat in the delivery: These rubber sanding drums fit in a standard drill chuck. A left hand thread puts pressure on the rubber to hold the sanding cylinders in place. Once you get used to setting them up, these are really effective for sanding large curved faces and even small flat faces.
Now I just need to get the finished buttstock to match the staining job on the pistol grip covers!
Still to go: I need to fix up the feed mechanism. All the components exist, they just need fettling to get them all working together smoothly. Then attach the ports (in and ejection). With that it will be painting and testing!
If this has inspired you to want a gun of your own, let me know! Drop me a line on: email@example.com, I’d love to hear from you!