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Webster IC Engine build log.
NickG:
Chris,
That is really impressive :thumbup: looks spot on, is that from aluminium now?
I was going to ask before I saw your link to your cnc conversion but still will - would this have been possible without that or dividing plates and just winding by hand or it there too high probability of human error?
I'm thinking of buying a rotary table as got 100 squid to spend on myself for my birthday!
Nick
raynerd:
Cheers for the replies. Madjack - I agree totally, although it takes much more time making things yourself it does give you confidence to make anything and saves money! I mean the gear cutters are £22 each and with 8 cutters in each DP as a set, prices can mount!
Nick - Yes, the gears are ally. I think I`d have had to make a multitooth cutter for steel gears but I bet if I`d have removed some material with the slitting saw like I did, I bet I could have given it a good go. The CNC rotary conversion has been one of the best things I`ve done. That being said, I converted it straight away so only used it as a rotab with handle for a month or so.
When I first purchased my rotary table, I tried cutting a gear turning the handle but it was a joke. No matter how accurate I tried to be I could never perfectly get around with a large number of teeth; the last tooth always was way out. Like you identified, tiny errors stopping and cutting each tooth just compounded! I then went and purchased a vertex dividing head to fit the rotab. This was a right pita to use - now I`m going to get blasted here because people have been using these for years and still are but man, it was hard work! I couldn`t keep count, I kept mucking up....it was much harder than I ever imagined. I then fitted Kwackers dividing attachment and have never looked back. I can use it for dividing or jogging it slowly I can use it like a handle and turn my work through it.
I`d go for one and then look into the conversion. There are a lot of people who have built one on here now so you`d get as much help as you needed to get one up and running.
Hope that is some help!
Chris
sbwhart:
Nice gear Chris well done.
That tamed the beast :whip:
Stew
NickG:
Yeah it does help, thanks Chris - after seeing yours first then bogs, it does look superb. Actually somebody told me about them a long time ago, a guy from our club who devised a circuit himself - not sure whether it has all the features yours does though but he may be able to help too.
I can barely afford the rotary table at the mo that's the prob - I'll be using it more for dividing than an actual rotary table for milling curves I think. Suppose at least I could do the mod later.
This is the one I was thinking of though because it comes with the dividing plates and seems a bargain:
http://www.warco.co.uk/HV6-Rotary-table-C32F40EE41.aspx
Guess I'd need to make up some sort of mounting to be able to take my chuck.
raynerd:
Nick, it does look a good price but just because I`ve heard so much about them and got one myself, the 4" vertex at £130 is a cracking sturdy rotab.
http://www.rdgtools.co.uk/cgi-bin/sh000001.pl?REFPAGE=http%3a%2f%2fwww%2erdgtools%2eco%2euk%2f&WD=vertex&PN=Rotary_Table%2ehtml%23a1258#a1258
I accidently lied earlier, I have the Vertex 4" not the 6". I did purchase the dividing plates ontop for a lot of money - I believed they were Vertex ones from RDG. When I did the mod I didn`t need them and sold them to someone on here and got into a bit of hot water when I found out they were actually Warco ones - but I definately purchased from RDG as Vertex!! A bit dissapointed about that one.
I certainly consider £130 for the vertex 4" table and then your only talking about £30 to make the controller! Then again you have a stepper motor to buy - £25? and the driver - ebay £25?? .... hummmm, I guess it does work out more.
I use mine 9/10 times for dividing. I`d try and make Kwackers indexing tool for sure.
Chris
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