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My New Laser cut coach :)

Posted: Thu Apr 07, 2011 8:17 pm
by Sammmm
First of all i would like to thank Zach for advice on how to cut it properly...although the software bumped the speed up to 8% speed from 2.1% so will have to investigate that because it didnt cut 100% the way through but here is a set of pictures starting from design to finished cut :). More will be made after the half term :D all thats missing is the base at the moment!!! and wheelsets oh and need to modify the bogies as they were hit and miss.

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^^ this is a short video of engraving
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The bogies will have 24mm diameter wheels and not the 16mm wheels shown :) and also the coach will be stained then varnished as the engraving isnt as deep as i would of hoped! althouhg it tooke 15mins for the whole thing to be cut out

Posted: Thu Apr 07, 2011 8:39 pm
by 90733
Cool, nice looking coach, I like the design :D

Posted: Thu Apr 07, 2011 8:51 pm
by andysleigh
awesome!

Posted: Thu Apr 07, 2011 8:55 pm
by Sammmm
Thanks guys :) the main shape of the coach was dreamt up on graph paper a year ago and then spent 2hours in school designing it and adding detail :) also decided it would have a 2011 year plate :) also they teachers like me using it cos i know as much about how to use the machine as they do so im kinda they testing bunny :)[/quote]

Posted: Thu Apr 07, 2011 9:03 pm
by Dr. Bond of the DVLR
Flippin heck! For a first go that is amazing! Far beyond anything I've ever done! Bravo!

Posted: Thu Apr 07, 2011 9:14 pm
by bessytractor
that is fantastic!

Posted: Thu Apr 07, 2011 9:20 pm
by LMS-Jools
Nice. 8)

Posted: Thu Apr 07, 2011 9:44 pm
by Sammmm
Mr. Bond of the DVLR:51815 wrote:Flippin heck! For a first go that is amazing! Far beyond anything I've ever done! Bravo!
Thanks! I have only noticed one thing i done wrong thought .. the bogies centeral strut is slightly oversize but not a worry as can be manualy cut down.. but the pivot point is off set =[ but nothing i can do until after the Easter Holidays :(

Will be producing one mor of these and then a guards comp. version... also do you think that for 'bearing' thin drinking straws will work.. as the holes in the wood are 4mm but the axels are 1/8(3.125mm) they run freely but as Christopher (cjallenby) pointed out that after having a rake of 3 this may cause alot of friction causing a heavy train

Posted: Thu Apr 07, 2011 9:50 pm
by Dr. Bond of the DVLR
Yeah, would probably work. Or maybe K and S tubing?

Posted: Thu Apr 07, 2011 9:56 pm
by 90733
Wish I had acess to a laser cutter :roll: I wanna design cool things like this ;) :D

Posted: Thu Apr 07, 2011 10:07 pm
by Sammmm
90733:51823 wrote:Wish I had acess to a laser cutter  :roll:  I wanna design cool things like this ;) :D
Ive been waiting for my school to get one for 4years :P now i have got 2months to make the most of it as i finish year 11 soon and am going to college.. but hopefully thell have one there aswell :)

And thanks Zach ill have a look at K and S tubing just hard to find 1/8 inner diameter =/ if i can only find 3mm ill attempt to turn the ends of the axles down a little bit..final question will a 1/8th axle spin in a 1/8th tube?

EDIT : Found some brass tube on ebay which are 4mm outer diameter and 3.4mm inner diameter so that should suffice

Posted: Thu Apr 07, 2011 11:00 pm
by dougrail
Nicely done Samm....taking orders? ;)

Posted: Thu Apr 07, 2011 11:36 pm
by mhlr
Excellent job, really nice looking coach! And I would also say you need bearings in those bogies, just bits of copper tube the right diameter glued into the holes could do the trick?

Re: My New Laser cut coach :)

Posted: Fri Apr 08, 2011 12:14 am
by Mr ACME
IMHO you have made a really good job. Have you tried cutting at 100% power speed 1.2% and engraving 100% power and 3.5% speed?

You could copy the way I make my 7/8" scale axleboxes. I make the axle bearings on my turret lathe but perhaps K&S brass tubing? The axle bearing is used to locate and align the parts. Works well and once glued together is very tough.

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Posted: Fri Apr 08, 2011 7:28 am
by Sammmm
Doug- I would if i could but the teachers have said its strictly for my use and not to use to selll items :(

Pete- Yeah i put a bid on some brass tubing with 4mm outer diameter and 3.4mm inner. so that will fit snuggly in the hole that has been made and then a 0.2 mm play inside the tube shall work i think :)

MrAcme- Yeah thanks for the info i shall experiment after the holidays but the tech need to investigate why the software on the pc Bumps the Speed up to 8.2% every time we go below 5%

Posted: Fri Apr 08, 2011 11:19 am
by GTB
Sammmm:51824 wrote: ill have a look at K and S tubing just hard to find 1/8 inner diameter =/ if i can only find 3mm ill attempt to turn the ends of the axles down a little bit..final question will a 1/8th axle spin in a 1/8th tube?

EDIT : Found some brass tube on ebay which are 4mm outer diameter and 3.4mm inner diameter so that should suffice
K&S brass tubing is telescopic and being made in the US comes in 1/32" OD increments.

If you get a length of K&S #128 5/32" OD brass tube, it will have a bore that is a running clearance for 1/8" axles. 3mm axles would be a rattly fit, but it would work for them as well.

Regards,
Graeme

Posted: Sat Apr 09, 2011 12:08 am
by Sammmm
Thanks for everyones nice comments and advice :) Here is a sneak peak ofa design i have been working on for the last hour or so..( managed to source a version od 2D Design v1 which can be opened in school using 2D design v2)

Still more bits to design on here so that i get maximum yeild from eaach panel of ply.. so these will be cut out in about 2 weeks :)

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^^ the coach side (which will be replicated 2x to produce a coach)WITH SPELLING RECTIFIED Thanks to Mr ACME

Posted: Sat Apr 09, 2011 12:14 am
by Mr ACME
Not nitpicking but correct the spelling of guard. If you don't you'll have endless ribbing once it's burned.

Posted: Sat Apr 09, 2011 12:21 am
by Sammmm
Mr ACME:51893 wrote:Not nitpicking but correct the spelling of guard. If you don't you'll have endless ribbing once it's burned.
Thanks! Lol Lesson learned from this is dont design a coach at midnight :)