Bar machining plug missing.

[Ratman]

Manufacturing I'm thinking . Press tool location or similar but if you can find another use for it fill yer boots . [emoji846]

?? bizarre cos as above, i have quite a few bars ranging from 12” - 20” 3/8 & .325 and some have the bungs in, some out.

[William Clifford]

Yep, I'm the same. With the smaller bars I don't worry about it as they work, have probably had a lot of use already and don't cost as much! But with such little use I'm wondering what the deal is.

[William Clifford]

I'll have to put a nail in the wall higher up so I can hang this one alongside the others!

[Mygalomorph]

Plug it back in and "teach it a lesson" by placing the bar on an anvil and pound the plug/rivet with a big hammer and a large punch or chisel !

That'll teach it ?

 

Take care to do it from the small diameter side ?

 

Edited March 17, 2019 by Mygalomorph

[openspaceman]

39 minutes ago, Stubby said:

Manufacturing I'm thinking . Press tool location or similar but if you can find another use for it fill yer boots . ?

Back in the day Michael Richmond told me it was  a bolt was passed through a batch of solid bars and  remained in them as they were  machined, presumably the parting off deformed them enough to be held in the bar.

 

I don't think you find them on laminated bars

[Echo]

Find a piece of round steel slightly bigger than the hole, cut a disc off it same width as bar or slightly less, squeeze it in with a G clamp, or do the same with a piece of plastic bar, you get it in the engineering shops for making bushings. If you have the original piece, clean well and stick back in with some of this new fangled epoxy or gorilla glue which expands, and clean up bar.

Edited March 17, 2019 by Echo

[Echo]

47 minutes ago, openspaceman said:

Back in the day Michael Richmond told me it was  a bolt was passed through a batch of solid bars and  remained in them as they were  machined, presumably the parting off deformed them enough to be held in the bar.

 

I don't think you find them on laminated bars

Most  likely used for jig-ing the bar to machine to spec.

[Stubby]

Ignore it . Bit of weight saving .

[William Clifford]

Ok, so nothing to bother about? The cheapest these can be picked up seems to be about £250 before the vat so didn't really want to be having to fix it if it's falling apart almost straight out the box. Still not sure if the manufacturers design them to have these pieces stay in or come out! If it's not going to affect performance then I'll not worry about it. Cheers.

[jonnygurkha]

Ok, so nothing to bother about? The cheapest these can be picked up seems to be about £250 before the vat so didn't really want to be having to fix it if it's falling apart almost straight out the box. Still not sure if the manufacturers design them to have these pieces stay in or come out! If it's not going to affect performance then I'll not worry about it. Cheers.

I have the same on my 48” stihl duromatic bar. The tab fell out early on. It doesn’t really affect performance but it can be a pain pulling the bar out of a cut as you get a lump of saw dust caught in the hole wedging it in the cut.