**D.C.G...Before/After**

ImFudged

Might as well make this nice early.

Will gears come up?? What do you think? Any predictions??

liverpoolskid

What would be fairly decent bets of coming up? I had the worst possible teacher so I need all the help I can get please!

Togepi

Hoping for axonometric projection, planes, or interpenetration wouldn't even be too bad. Solids in contact should be fine too. And some nice A and C parts.

keyhole

this is the worst predictions page ever........ does anyone have any actual predictions and not just hoping? im seriously screwed for it..

Osric

Solids in contact, axonometric and interpenetration

Mista

Im pretty screwed for this, but at least ive 5 days to study it... hoping for interpenetration, planes, CAMs.. not perspective

If anybody knows a place where traces of a plane are explained, will they tell me please?

ImFudged

Its hard to predict what'll come up since its only been around for 3 years. Idk im just going to have everything prepared. As for traces i always take a guess its usually only 2 to 3 marks anyways. Unless its the easier vth traces cutting surfaces and stuff

ImFudged

Mista wrote: »

Im pretty screwed for this, but at least ive 5 days to study it... hoping for interpenetration, planes, CAMs.. not perspective

If anybody knows a place where traces of a plane are explained, will they tell me please?

This website might be useful, if you haven't already seen it http://www.t4.ie/dcg_core_geometry.html

mathstalk

I rock at Solids in Contact, and Assemblies. Anything to do with straight forward spatial awareness is easy sailing. Need to do some work on Geologic Geometry though.

Here are some time savers for the exam:

• Get some circle stencils for smaller radii.
• Scribe two lines on the underside of your 45 set-square, both 5mm apart. Make sure the lines are parallel to the side of the set-square. These can then be used to hatch really fast. I.e. Line up the previously drawn line with the line scribed on your set-square. Then draw another line on the page, then repeat.
• Have 2 or 3 sharp pencils so that you don't have to pare during the exam.
• Or, if your comfortable, use a mechanical pencil. It never has to be pared. Because it never blunts, all the lines look crisp and never fat and blurry.
• If you can get your hands on one, bring an adjustable set-square. They come in handy in the majority of questions.

DCG questions are scarce these days, so here are a few folders of relevant questions I compiled from old exam papers a few months back, enjoy! PS. I flipped the colours to make them easier on the eyes for LCD screens, so don't try printing them out or you'll sap your ink cartridge.

Mista

mathstalk wrote: »

I rock at Solids in Contact, and Assemblies. Anything to do with straight forward spatial awareness is easy sailing. Need to do some work on Geologic Geometry though.

Here are some time savers for the exam:

• Get some circle stencils for smaller radii.
• Scribe two lines on the underside of your 45 set-square, both 5mm apart. Make sure the lines are parallel to the side of the set-square. These can then be used to hatch really fast. I.e. Line up the previously drawn line with the line scribed on your set-square. Then draw another line on the page, then repeat.
• Have 2 or 3 sharp pencils so that you don't have to pare during the exam.
• Or, if your comfortable, use a mechanical pencil. It never has to be pared. Because it never blunts, all the lines look crisp and never fat and blurry.
• If you can get your hands on one, bring an adjustable set-square. They come in handy in the majority of questions.

DCG questions are scarce these days, so here are a few folders of relevant questions I compiled from old exam papers a few months back, enjoy! PS. I flipped the colours to make them easier on the eyes for LCD screens, so don't try printing them out or you'll sap your ink cartridge.

Those look great, cheer! Also, where would ye get a circle stencil?

ImFudged

Mista wrote: »

mathstalk wrote: »

I rock at Solids in Contact, and Assemblies. Anything to do with straight forward spatial awareness is easy sailing. Need to do some work on Geologic Geometry though.

Here are some time savers for the exam:

• Get some circle stencils for smaller radii.
• Scribe two lines on the underside of your 45 set-square, both 5mm apart. Make sure the lines are parallel to the side of the set-square. These can then be used to hatch really fast. I.e. Line up the previously drawn line with the line scribed on your set-square. Then draw another line on the page, then repeat.
• Have 2 or 3 sharp pencils so that you don't have to pare during the exam.
• Or, if your comfortable, use a mechanical pencil. It never has to be pared. Because it never blunts, all the lines look crisp and never fat and blurry.
• If you can get your hands on one, bring an adjustable set-square. They come in handy in the majority of questions.

DCG questions are scarce these days, so here are a few folders of relevant questions I compiled from old exam papers a few months back, enjoy! PS. I flipped the colours to make them easier on the eyes for LCD screens, so don't try printing them out or you'll sap your ink cartridge.

Those look great, cheer! Also, where would ye get a circle stencil?

Any stationary store. They are seriously handy to have but can be dodge to use, make sure the nib of the pencil is really thin

Togepi

Didn't realise it was a predictions page, I just thought it was for discussion of the exam. There's not a whole lot you can predict really.

I think an assembly will come up in Section C though. :P

earwax_man

I'm unsure about this, I'm quite happy, even with a **** teacher xD

celtic10000

What do all of ye think might show up this year? Planes, Perspective, Trimetric, Solids in Contact?
Also, does anyone know how harsh they marks the projects or are they fairly generous?

celtic10000

WHAT I WANT: Planes in space, Dimetric or Trimetric, Interpenetration or easy perspective or Solids in contact., skew lines.

WHAT I DONT WANT: Developments, cut surfaces, parabolic curves and everything else.

Knowing my luck everything i dont want to show up will show up

kingbob387

How are people studying for this at home? Can't do much drawing with no T-Square and what not :S

Mista

kingbob387 wrote: »

How are people studying for this at home? Can't do much drawing with no T-Square and what not :S

Well I've an old drawing board from my sister, took a T-square from the school (they let me) and nicked a couple of A2 sheets sorted

ImFudged

kingbob387 wrote: »

How are people studying for this at home? Can't do much drawing with no T-Square and what not :S

I robbed a set out if the school along with some paper and tape. I have all day Tuesday to draw and do exam q's

Wanchor

How did you guys do homework before this?

Mista

Wanchor wrote: »

How did you guys do homework before this?

Well, I've had all the stuff mentioned all year round pretty much See if theres anyone you know with drawing stuff that you could borrow, maybe a DCG student from last year.

bokkenspiel

cams are definitively coming up!

celtic10000

How harshly are the assignments marked for this subject?

bokkenspiel

celtic10000 wrote: »

How harshly are the assignments marked for this subject?

its fairly easy to get the first 30/40 percent but a bit harder to get 35 and very hard to get close to 40. They will take marks off you for presentation and stuff just so you wont get 100% marks on each page. They don't read through it word for word but read some of the text on each page to get an idea of how good the content is. So it really depends on the examiner.

celtic10000

bokkenspiel wrote: »

its fairly easy to get the first 30/40 percent but a bit harder to get 35 and very hard to get close to 40. They will take marks off you for presentation and stuff just so you wont get 100% marks on each page. They don't read through it word for word but read some of the text on each page to get an idea of how good the content is. So it really depends on the examiner.

thanks. its all down to presentation in the end i guess and I suppose art students have a big advantage when it comes to the assignment, I still think ive done a good job at the project part tho and im happy with my solidworks models they really stand out. Hoping for a B inthis subject and im hoping for the assignment to bring my grade up rather than down

Wanchor

What bottle did everyone pick? I was a bit of a perfume expert during that month and it felt really, no, too feminine.

mcpaddington

Wanchor wrote: »

What bottle did everyone pick? I was a bit of a perfume expert during that month and it felt really, no, too feminine.

I did a can of lynx and then I created a new perfume bottle based on a zippo lighter.

Yea I hope it's a pretty easy year, my teacher was fairly poor so I'll be lucky to scrape a C. With the project though I want a B3.

Mista

Wanchor wrote: »

What bottle did everyone pick? I was a bit of a perfume expert during that month and it felt really, no, too feminine.

This... wasn't bad to do, especially compared to some of the things my classmates did

And yes, my locker stank of perfume for a while. :pac:

celtic10000

Are we allowed to put up a photorealistic image of the bottle? or is that breaking a few rules?

Togepi

celtic10000 wrote: »

Are we allowed to put up a photorealistic image of the bottle? or is that breaking a few rules?

I don't think you're supposed to post anything from your project until the end of August, or after the script-viewing. Post pictures from Google Images I'd say, put not original work used in your project.

Mayo_Boy

Im fecked for this.
Don't really know what to look over

earwax_man

I'm hoping for some nice interpenetration, cams & loci, roads & mining, perspective and solids in contact. Skew lines, conics and anything do-able would be nice for short questions. I just want this over with, I want summer. -___-

IRA 1916

Hope to have 30% out of 40 from the project and 50% out of the one wednesday so that'll give me 60% overall, be delighted

MattHelders

IRA 1916 wrote: »

Hope to have 30% out of 40 from the project and 50% out of the one wednesday so that'll give me 60% overall, be delighted

Exactly what I'm hoping for. I got 55 in my mocks so hopefully I'll be alright

Mayo_Boy

earwax_man wrote: »

I just want this over with, I want summer. -___-

Same as that. Roll on 5.00pm wednesday!!

Mista

Has anyone ever looked at the marking schemes for DCG? Its ridiculous, you get nearly all the marks for the easy parts, and feck all for the harder bits.

MattHelders

Mista wrote: »

Has anyone ever looked at the marking schemes for DCG? Its ridiculous, you get nearly all the marks for the easy parts, and feck all for the harder bits.

Thats the best part. You get 15 out of 45 for setting the question up I think

IRA 1916

MattHelders wrote: »

Thats the best part. You get 15 out of 45 for setting the question up I think

For just drawing the given views??

Togepi

Mista wrote: »

Has anyone ever looked at the marking schemes for DCG? Its ridiculous, you get nearly all the marks for the easy parts, and feck all for the harder bits.

It's brilliant. 22/45 for interpenetration for just copying down what's given! :pac:

Wanchor

Our teacher never went into what those maps are on the exams. Whenever I asked, he shunned me and gave me that leave-it-alone-if-you-value-your-life. They look so pretty.

John Mullally

Hoping for an A1 in DCG. Its my favourite subject and i cant wait for it. Our teacher said that you gget a good few marks for setting up the question. Even if ya dont know how to do it, just copy the question down onto the sheet. Use light lines and show all construction lines clearly. Dotted lines for anything hidden. Spend a while on the short questions he said : they are worth the same as a long question and a half. Other than this, good luck...!!

Mista

Wanchor wrote: »

Our teacher never went into what those maps are on the exams. Whenever I asked, he shunned me and gave me that leave-it-alone-if-you-value-your-life. They look so pretty.

We never did them either.. and our teacher absolutley refused to do assemblies.. they look handy enough

Togepi wrote: »

It's brilliant. 22/45 for interpenetration for just copying down what's given! :pac:

Yep, and you get feck all for harder parts, like traces of a plane.

IRA 1916 wrote: »

For just drawing the given views??

Depends on the question, but you get around half the marks for it.. so if your running out of time, just stop what your at and go on to your next question :pac:

Mista

John Mullally wrote: »

Hoping for an A1 in DCG. Its my favourite subject and i cant wait for it. Our teacher said that you gget a good few marks for setting up the question. Even if ya dont know how to do it, just copy the question down onto the sheet. Use light lines and show all construction lines clearly. Dotted lines for anything hidden. Spend a while on the short questions he said : they are worth the same as a long question and a half. Other than this, good luck...!!

You to :P Fair play to ya if ye get your A1, I'm hoping for a B2 at highest.. project wasn't great I'm not in a great way for the short questions actually.. probably should practice some more :P

John Mullally

Wanchor wrote: »

Our teacher never went into what those maps are on the exams. Whenever I asked, he shunned me and gave me that leave-it-alone-if-you-value-your-life. They look so pretty.

you mean those ''roads'' questions. Fair play to your teacher, they are real bast**d of a question. You should thank your teacher, and for everyone else, stay away from roads if ya want a good mark...!!

Togepi

Mista wrote: »

Yep, and you get feck all for harder parts, like traces of a plane.

That's good for me though because our teacher used to always leave the very last parts out. :eek: I'd love an A in it, should get an A for my project (got a B1 in it last year) but I'd be doing very well to get a high B!

ImFudged

Easy A. Nice way to end 2 weeks of handy worthless crap

celtic10000

John Mullally wrote: »

you mean those ''roads'' questions. Fair play to your teacher, they are real bast**d of a question. You should thank your teacher, and for everyone else, stay away from roads if ya want a good mark...!!

They're actuly really easy but it hard to get the stratum bits. its a very handy question to get a guaranteed 30/45 at least if you know what your doing. Cant really practice them tho without any maps

bokkenspiel

i did this bottle, took forever because i went into all the detail of the neck and mated 60+ diamonds one by one

celtic10000

Anyone who does GEOLOGIC GEOMETRY do ye know where to draw the semi circle to get the tangent for the slope? Is it from the centre of the road or from the edge of the road? or does it even matter?

mathstalk

celtic10000 wrote: »

Anyone who does GEOLOGIC GEOMETRY do ye know where to draw the semi circle to get the tangent for the slope? Is it from the centre of the road or from the edge of the road? or does it even matter?

Edge I think.

clio94

celtic10000 wrote: »

Anyone who does GEOLOGIC GEOMETRY do ye know where to draw the semi circle to get the tangent for the slope? Is it from the centre of the road or from the edge of the road? or does it even matter?

Yeah its from the edge .. *Fill cone at the high end of the road* I have that engraved in my brain forever :P

mathstalk

Just came up with a good idea for those killer "intersecting object" questions. Bring a ball of bluetac in with you. If you're finding it difficult to visualise how the objects will cut each other. Spend 5 minutes moulding it out with the bluetac. Your set-squares and compasses should be good enough precision tool to form a quick model.

This also works for solids in contact and tangent planes: