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Hi all,has anyone built this bigger Boll engine? I've just got the plan for it,but ideally I'd like to convert it to glow operation. Obviously,I would leave out the contra piston,and drill and tap the head for a glow plug.Do I need to change the ports in any way?Is there anything else that...

I hope any members in the area are ok.That was a sizeable quake,and would have been a frightening experience for many people. I haven't heard any further news yet.Strength to all concerned.

First it's earthquakes,now it's snow.It's very unusual for us here in christchurch,new zealand to have this much snow.We've got about a foot on the ground,and it's still coming down. I know it's nothing to people in the other parts of the world,but it's almost paralyzed this city. As for me,I'm...

We have suffered another 2 major quakes in Christchurch this afternoon,a 5.5 and a 6. Somehow they felt worse than previous ones because of the rolling motion that came with it. Sadly,my backyard is again full of silt,so I'll be kept busy with a shovel and wheel barrow for a while. No damage to...

I've had this 400mm dro laying around for 3 months,and decided it's time to fit the thing.The scale was too long,so I lopped off 150mm,using a piercing saw,or jeweller's saw. I should have measured more carefully,as after fitting I found the scale to be around 30 mm too short! I hadn't allowed...

I have a dro on my milldrill.It has iGaging branding,with the Hafco display.I believe they are the same unit Harbor Freight sells. After playing about for a bit,I now have a situation where ,when switched on,the unit starts counting up 5 mm at a time,until it gets to 30 something.As the table...

I started on this engine last year,before earthquakes interrupted my hobbies. Made some progress in the last two weeks,and here are a few pics of various parts: The cylinder is supposed to be cast iron,but I didn't have any,so I used a piece of unknown steel.The piston is cast iron,and this is...

Here is some security camera footage of the time the earthquake hit Christchurch,new zealand: http://tvnz.co.nz/national-news/more-unpredictable-weather-come-says-professor-2-10-video-4097114 It's worth noting that the only person taking shelter is the guy who hides in the doorway of the...

My problem is this:My 4-jaw chuck is too large to hold 3/8 square stock. I have looked high and low,but cannot find an er32 square collet. I thought of making a cathead(?),but doubt that I could make this accurate enough to hold square stock true. My main reason for wanting to hold square stock...

I have just finished making the piston for Jan Ridder's simple two stroke. It needs to be tapped m5 for the piston rod,and also cross drilled for a pin. I hadn't read the part about the pin,so only drilled the piston 10mm deep originally.It's supposed to be drilled 22mm deep,so i refitted the...

Has anyone built the electronic edge finder that was featured in MEW late last year?It was in either november or december issue.Just looking for things to watch out for before I jump in with both feet,and sink straight to the bottom :big:.Thanks.

Is this the worlds smallest stirling engine?: http://www.youtube.com/watch?v=5t5qb0GWnsg&feature=player_embedded Amazing work! Sorry if you've already seen it.

Can anyone identify the incomplete set of parts in this picture?: http://www.trademe.co.nz/Toys-models/Models/Other/photos/a-329382667/p-149118645.htm I don't want to bid on it unless I can get the drawings for it.Thanks for looking,guys.

I fitted the scale I bought last week over the past couple of days. Rather than show every pic,I refer you to the photobucket album: http://smg.photobucket.com/albums/v401/bramleynz/x-axis%20digital%20scale/ You will note I took the lazy way out,and fitted the scale to the t-slot normally used...

Mother nature gave me and other local residents a swift wake-up call saturday last. At 4.33 am I was woken by a severe earthquake,unlike any I had experienced before.It took a little while to sink in what was happening,then i got the wife and myself out of bed and into the doorway.The main quake...

I came across an LPG cabinet heater with a dud ignitor.I became the owner for the princely sum of $1 :). Having got my treasure home,I proceeded to dismantle the heater,and came up with some interesting stuff. This type of heater has the regulator and ignition switch all rolled into one: This...

I was looking for a copy of this book on my local library site,and somehow ended up here: http://www.fastonline.org/CD3WD_40/JF/424/19-423.pdf. It turns out this is an online copy of this book,which is long out of print(1975 was the last issue,afaik). They also have "model boilers and...

This seemed such a brilliant idea,I had to have one! http://madmodder.net/index.php?topic=2323.0 Although John"blogwitch" wasn't the originator of this idea,he put it in pictures ,so the blindingly obvious became clear to even a dumb cloghopper like me :big: So,after raiding the...

After several attempts,I finally have a boiler without leaks. I intend to run at 30-40 psi,so tested at 100psi: The pics of the gauge show the pressure after about 4 hours.I'll call it good. I sealed all plugs etc. with ptfe tape.Is it ok to leave this in,or should it be removed before...

The model engineering club I'm a member off,held an open day on Showday,the 14th of november. I've added photo's on photobucket,showing some of the engines,loco's and boats. http://smg.photobucket.com/albums/v401/bramleynz/halswell%20showday/