Often there is a need to make burner bell to some stove since time to time they are missing from the stoves. In my Ender Bivak https://classiccampstoves.com/threads/off-for-the-lunch.37210/ (More details from the stove at reference gallery: Enders Biwak ) I noticed that flame pattern is a bit too wide for small pots (f.ex MSR Titan Kettle) and cups (f.ex Snow Peak & Tatonka 0,6 ltr cups) that I use with it. Here is Enders Bivak flame pattern: I though that I try to make burner bell that makes a bit more concentrated flame pattern and flames would be a bit more close to kettle/cup bottom. 36 mm hex bar was suitable piece of raw material for the burner bell: First I cut one end of the bar to 25 mm for lathe chuck mounting and... Then I made outer shape for the burner bell: Then I made inner side for the burner bell: It started to look a bit like burner bell: I don't have a milling machine (yet ) so needed to use lathe for milling. I mounted whole thing to a tool post's 25mm boring bar holder and milled air intake slots to the side of the burner bell. I also made places for flame spreader holding/hanging screws on the top of the burner bell: Next four air intake holes to the bottom of the burner bell: Flame spreader was just a brass disk with four screws to keep it on the top of the burner bell: Then I tested it: There was under burn and flame was not looking normal. I was thinking that flame spreader restricts too much air+fuel vapour mix flow. So I made smaller diameter disk and rounded under side of it to get better flow for air+fuel vapour mix: Then it was time to test it: Now it was working better! Comparison to original burner bell. New burner bell is a bit taller and angle at top part is a bit steeper: Here the burner bell mounted onto stove: Some detail pictures from the burner bell: Flame spreader bottom and top sides: Parting off that burner bell from that piece of brass bar left me around 50 mm long and 25 mm diameter piece of brass. In some lot of machinery parts I got full set of Hommel "multimachine" http://www.lathes.co.uk/hommel/ collets. So I was thinking that just for fun I make holder for those collets from that left over brass bar. It could be handy some day to hold some small circular/round items...: I got utilized the whole brass bar and proved for myself that making of the burner bell is possible.
Beautiful work @Afterburner You’re so right! I could sorely use that lathe (and your skill of course) for my Juwel rocket stove project! John
@Afterburner, excellent workmanship and execution! Your using the lathe as a milling machine is a excellent of adapting the tools you have to the needs of the job, many can't think far enough ahead to come up with the innovation to get 'er done! Kudos, sir! Murph
Nice Kari A well presented post and a great read, very well done As for not having a Mill well, I have a feeling that is just a matter of time What's next
Regarding not having a mill, you could keep an eye out for a 'Vertical Slide' . They can pop up quite cheap and will give you that extra axis (the up/down axis that putting the workpiece in your tool post doesn't give you) ,then you'll be even more versatile with your milling ops on your lathe. (That's assuming you have the appropriate anchor points like the 'T slots' , or the like on your lathe) Something like this..... These are very popular with model engineers, that have limited space, and limited funds, and want the max from their lathe Again, Good to see your work Cheers
Thank's from nice comments for all! @presscall No skills yet... I was just testing if things that I have been thinking and seen at youtube are possible. Smaller/miniature rotary table and milling I tried first time... @Billofthenorth I have been looking suitable chunk of brass for that fount project. @Longilily / Ray I have been looking a milling attachment (Rishton or Emco FB2) to my lathe since there is ready made mounting points on my lathes bed for it, but not seen them for sale here for a long time. Lots of vocational schools are downsizing here so lots of bigger milling machines(=floor standing Bridgeport, TOS, etc.) are for sale all the time but I don't have a place to put them. I have looked those vertical slides, but in my M300 cross slide there is no T-slots for vertical slide just dovetail edges to mount T-slot plate: I asked one place to make the T-slot plate, but price was a bit too much so I have been looking for ready made T-slot plates from other sources. Since I have not too much hurry so I get it when suitable one pops up for sale.
A few solutions - I've mounted a length of 1/2" keystock on the back of a 6" x 6" jig plate with precision drilled and tapped holes, I put it in the tool post in place of a tool bit, and mount the workpiece on the jig plate. I've also made a 90 degree adapter to remount the top slide as a milling attachment, using the same jig plate to hold the workpiece. Murph
@Murph Thank's for the tips! I haven't thought at all to remove tool post and to mount workpiece there. I already have 90° T-slot plate from a Bridgeport milling machine, but not yet bits & pieces to utilize it in my lathe.
