Hey Guys,

Created a different thread for the 3D printer stuff!

Look what just came together!

Intakes are great but has anyone had any experience with these jet motors? They seem pretty weak, any suggestions? Batteries, nozzles?

Edited By Matthew B on 26/01/2015 20:44:50

New idea for front cannon for the front of a fast attack craft!

Hey Bob,

Yeah, i did see a video of someone who made a full car! Very cool indeed.

For the moment i am having to save up for some more PVA because it is almost twice as expensive at the other types of filament.

Until i can buy some to can make more complex designs i can only print none moving items

However, this video demonstrates the problems of trying to print moving parts without the use of PVA.

This guy has one of the older single nozzle printers so it having to manually clean the bearings up whereas if i could get some pva i would be able to print those bearings without any of the clear up When i get hold of some PVA i will be sure to show you what it can do!

Here is an example of what can be done when you can PVA!

Matthew

Hey Bob,

Yeah, it is very impressive! Soon you won't ever order items online to be delivered but will order the files to be printed!

It is going to be a very interesting next few years!

Matthew

Hello all,

Sorry havn't been active on the forum, been busy!

Bob you are spot on about how the printers work! Your nose shouldn't of grown at all

Len, You sound like you have been through a bit of traumatic experience with good old health and safety! It is now really bad in school too, stupid stuff like one week we did a science experiment to demonstrate polymerisation. Basicly we ended up making these squishy balls out of PVA glue! Nothing sinister just PVA glue but we weren't allowed to take the balls home because apparently we could hurt someone with it; PVA glue! Although annoying; my experience sound insignificant compared to your ordeal.

There were a few things you said above which i wasn't quite sure on and was wondering if you could fill me in so i can see if i can help in any way with your 3D printing/CAD!

"The kit at Burnley college is outstanding and very much at the cutting edge. The demonstration pieces they show students are quite mind boggling (a fully working adjustable spanner is just one example).

By cutting edge are you talking about the CAD software or the machines? Dependent; could you explain why they were so cutting edge?

To pass the course you only have to print a 3D brick. My personal objective is to do left and right hand props for Resurgam at various pitches so I need to focus on the CAD bit.. I am absolutely sure that the way of the future is 3D printing. The king of the hill will be he who can write the program, not particularly own the machine.

You said, to pass the course you only need to print a brick? How do they expect you to do this and on what software? Also if you are struggling with it i will be happy to help Finally the props for Resurgam, a very interesting project! If you are doing it in AutoCAD i would be happy to help also!

P.s Bob the boat is coming along great! Just fitting the back manifold then i will be ready to post a photo

Matthew

Hi Len,

Maybe HSE are that bad after all! Wow! two washing machines! That is a big one, you should be able to print anything on that! 6 months is pretty cutting edge.

The CAD software i am using is AutoCAD 2015 which seems to work well but im not sure if it is similar to solid works but i will try help if you need. There are plenty of good videos showing all the concept even if the videos aren't on the specific software package you are using.

Here is an example of someone making a prop:

Learning to do props is what i will be doing after i finish my manifold project so we can trouble shoot through it together!

Matthew

Bob I am flattered!

No your not intruding at all! Umm at the moment i am studying all the core subject English, Maths, RS ect. I would be taking a humanities subject (geography or history) but i did it 2 years early last year and this year i am taking science and maths early. Then in addition to those i am studying computing, electronics and business to take next year with the rest of the core stuff.

Then if all goes well i will take Physic, Maths, Computing and Business for A-Level with the aim of leaving my options open for Computer science/Software engineering or mechanical engineering. Then if i pass my A-Levels with flying colours i would take a hybrid degree in mechanical and software engineering or just software depending which i like more at that time and then do the degree at the best university my grades will allow

Model boats have been a very recent discovery (you can probably tell by my lack of knowledge!). I am quite a keen rugby player (captained the school team for a while and won the district league; i was a second row for a while but now play number 8). I used to swim quite competitively. However i have since given up swimming because i got to the stage where the coaches weren't interested in you unless you wanted to take it further (from 7 hours to 11hours a week minimum); which to be quite honest didn't interest me in the slightest. I would rather be studying/honing my skills as an engineer.

So after all that here i am now! using a 3D printer to sculpt parts for a model boat! I find it interesting mainly because it is the one thing that really uses all my brain power to do and is a great engineering challenge.

I apologise for such a long reply! You are probably board to death by the time you get to the end

Matthew

Thanks Bob

Hello all,

Would i mind if i asked you about the next stage of my build?

So far i have the 2 motors fitted with the intakes, as you have seen in previous posts. Now i have the outake tubes all done and the jet nozzles done to just need to drill a hole and we will be up and running. However, i know the 2 jet motors aren't going to get this boat going as fast as it needs to go so i have this :

This is a motor from a 2-3 foot long helicopter It is quite old but is powerful! The question is how powerful? Is there any way of checking what exact power it is?

Leading onto my next question. What type of propeller should i print? Pitch, diameter, number of blades? I am very novice at an understanding level (as you know!) and was wondering if you could fill me in so i can manufacture the parts for max acceleration and speed!

Matthew

p.s.

Look at the hellfire missle i just made!

Hey Ashley,

Thanks for the advice!

Yes the hellfire is pretty cool; im thinking i might put them on a little air cannons for a cool realistic safe way of making them fire!

The motors on the jets are pretty pathetic so changing them would probably be wise; as you said. However with the addition of the heli motor i think the jets will add more looks than they will add power So changing the jets will only be if the heli motor doesn't provide the acceleration i am hoping for.

With the nozzles i have created a modular outtake system so that i can interchange each element such as the outboard mount, nozzles, jet mounts and output tubing. I will have a little play around once i drill the holes and see what difference each type of nozzle makes and feed back to you!

Matthew

p.s. just finished my water cooled heli motor mount! it has a holo coil wrapping around it which will have water running through it. Which is all incased in a nicely tapered box! Now just have to wait 4 hours for it to print.