Welcome Guest Search | Active Topics | Log In | Register

11 Pages «<23456>»
Dennis' D51 build Options
Dennis
#61 Posted : 19 November 2013 15:11:49

Rank: Pro
Turquoise Medal: Turquoise Medal for model making know-how contributionBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 08/08/2013
Posts: 184
Points: 567
Location: Runcorn
Parts 07 - Motion gear
Hi,
In recent postings I mentioned that I was trying to find a way of getting the rods to look acceptable without paint.
I have tried Wet n Dry 1500 grade paper and whilst the finish is nice it is difficult to cover the surface 100% because of the indents.
I also suggested light bead blasting may also provide a acceptable finish.
See below the result of bead blasting at 50psi.
I still need to apply clear etch primer and probably matt lacquer.
I suspect this is the route I will now take for all the motion gear.
regards
Dennis
Dennis attached the following image(s):
Crank rod aa.jpg
Crank rod bb.jpg
Tomick
#62 Posted : 19 November 2013 16:10:28

Rank: Pro

Groups:

Joined: 24/08/2009
Posts: 48,827
Points: -13,348
Look great Cool
Dennis
#63 Posted : 19 November 2013 17:51:09

Rank: Pro
Turquoise Medal: Turquoise Medal for model making know-how contributionBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 08/08/2013
Posts: 184
Points: 567
Location: Runcorn
Hi Tomick,
Yes, pleased with overall effect. I may add a touch of black to lacquer coat. I ordered and received clear metal primer off
MDC, excellent service. Tamiya clear metal primer did not appear to be stocked in UK and postal charges from overseas
Were ouch!
Rgds
Dennis
Tomick
#64 Posted : 19 November 2013 19:22:03

Rank: Pro

Groups:

Joined: 24/08/2009
Posts: 48,827
Points: -13,348
Glad you got sorted.
Dennis
#65 Posted : 21 November 2013 11:31:30

Rank: Pro
Turquoise Medal: Turquoise Medal for model making know-how contributionBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 08/08/2013
Posts: 184
Points: 567
Location: Runcorn
Parts 07 Motion Gear

Following my previous posting I have now bead blasted all the motion gear.This included the cross heads and the motion bars. Removing the bars was a little messy due to available space when removing the screws.
All parts were degreased after blasting and then airbrushed with clear metal primer as previously mentioned. Finally all the parts were airbrushed with matt lacquer. I did add a very small amount of gloss black which has dulled the 'brightness' that was evident after blasting.
I must say holding the smaller items was difficult when bead blasting but the results are worthwhile.
Finished rods shown below.

regards
Dennis
Dennis attached the following image(s):
Crank rod fini a.jpg
Crank rod fini b.jpg
Virtue86
#66 Posted : 21 November 2013 11:50:52

Rank: Pro

Build-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 25/01/2012
Posts: 134
Points: 385
Location: Berwick Upon Tweed
Dennis,
Looks great, really authentic finish and the hint of black makes a difference. Could you tell me a little more about the bead blasting as this is something new to me.
Cheers
Peter

Current builds: Amati 1:200 Hood; D51 200
Bought and on the waiting list: HMS Endeavour's Longboat, 1:90 San Juan Nepomuceno, Titanic Lifeboat,1:200 Bismarck Strip and Rebuild
[b]Built:1:250 Titanic


Dennis
#67 Posted : 21 November 2013 12:19:40

Rank: Pro
Turquoise Medal: Turquoise Medal for model making know-how contributionBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 08/08/2013
Posts: 184
Points: 567
Location: Runcorn
Hi Peter,
Blasting of metals is a common way of preparing the surface of metals. When it comes to removing paint or rust then abrasive grits are used and high air pressures. Softer metals would suffer badly if blasted with these.
Blasting may be carried out on an industrial scale as open plan. However as we need to blast smaller items then cabinets are used whereby the medium is recycled to and from a type of spray gun.
Gentle blasting is used as a way of cleaning up metals such as alloy castings etc.
As we need a more gentle action then various 'grit's are available from soda ash to glass beads and many others. Grits that seem harmless normally when 'blasted' onto the item have an abrasive effect.
My main hobby is restoring old motorcycles and as such I have a small home built cabinet (see below). This has a glass window to enable the process to be viewed. A hinged/sealed door for access and a pair of sealed in long rubber gloves that enable the user to hold items with one hand and the blast gun with the other.
The base of the cabinet is angled downwards to encourage gravity to keep draining the used beads back to the gun via pipework and the air flow which as well as propelling the grit also provides a venturi action.
The air pressure can be varied, lower settings being less abrasive.
I am now happy with the results.

Always check threaded components for residual grit otherwise it may play havoc when inserting screws.

I Hope that helps.

I am sure searching online for bead blasting will also provide some guidence.

regards

Dennis
Dennis attached the following image(s):
Blast.jpg
jase
#68 Posted : 21 November 2013 13:56:35

Rank: Super-Elite

Publisher Medal: Featured Build of the MonthActive Service Medal: 500 post active service MedalPurple Medal: Super active service medal for 1000 postsTurquoise Medal: Turquoise Medal for model making know-how contributionOutstanding Build: An award for an outstanding buildBuild-Diary Medal: Build-Diary Medal of HonourRed Medal: Red Medal
Groups: Registered

Joined: 21/03/2010
Posts: 7,582
Points: 21,739
Certainly acheiving a rearly nice effect and a texture similar to the wheels.

J
“Whenever you find yourself on the side of the majority, it is time to pause and reflect.”
-Mark Twain
Dennis
#69 Posted : 21 November 2013 16:41:08

Rank: Pro
Turquoise Medal: Turquoise Medal for model making know-how contributionBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 08/08/2013
Posts: 184
Points: 567
Location: Runcorn
Hi Jade,

Thank you. I am pleased with the effect.

Regards

Dennis
arpurchase
#70 Posted : 21 November 2013 18:02:45

Rank: Super-Elite

Publisher Medal: Featured Build of the MonthActive Service Medal: 500 post active service MedalPurple Medal: Super active service medal for 1000 postsTurquoise Medal: Turquoise Medal for model making know-how contributionOutstanding Build: An award for an outstanding buildBuild-Diary Medal: Build-Diary Medal of HonourRed Medal: Red Medal
Groups: Registered

Joined: 27/09/2011
Posts: 15,196
Points: 45,687
Location: Dudley
BigGrin Hi Dennis
I do like this effect and will probably go for it myself as I was never happy with the Alclad finish I got.
Im sure I have seen somewhere I mini shot blaster il have to have a delve
regards
AndyCool
Current builds:-C57,Zero, Lamborghini Countach, Caldercraft HMS Agamemnon,Robi,R2-D2, MFH Cobra .

Dennis
#71 Posted : 21 November 2013 18:27:52

Rank: Pro
Turquoise Medal: Turquoise Medal for model making know-how contributionBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 08/08/2013
Posts: 184
Points: 567
Location: Runcorn
Hi Andy,

After reading and seeing your own results I did buy some Alclad, steel paint but I just wasn't happy with the result.
I am used to the effect that bead blasting can produce. Except for looking light, which has been reversed it's worked well.If you need any help re bead blast in then let me know.
Thank you for your comments.

Regards

Dennis
arpurchase
#72 Posted : 21 November 2013 19:04:29

Rank: Super-Elite

Publisher Medal: Featured Build of the MonthActive Service Medal: 500 post active service MedalPurple Medal: Super active service medal for 1000 postsTurquoise Medal: Turquoise Medal for model making know-how contributionOutstanding Build: An award for an outstanding buildBuild-Diary Medal: Build-Diary Medal of HonourRed Medal: Red Medal
Groups: Registered

Joined: 27/09/2011
Posts: 15,196
Points: 45,687
Location: Dudley
BigGrin Hi Dennis
I knew I had seen something whilst delving the internet ,what do you think of these 2 I know that a collector type box will be needed to contain the dust but I think my mini spray booth will cover this. Link below

http://www.everythingair...talog/Sandblasting.html

regards
AndyCool
Current builds:-C57,Zero, Lamborghini Countach, Caldercraft HMS Agamemnon,Robi,R2-D2, MFH Cobra .

Dennis
#73 Posted : 21 November 2013 19:37:09

Rank: Pro
Turquoise Medal: Turquoise Medal for model making know-how contributionBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 08/08/2013
Posts: 184
Points: 567
Location: Runcorn
Hi Andy,

If anything those two airbrush style units may be more appropriate. My own is somewhat unwieldy
On such small items.
The actual grit used and the pressure will produce varying results. Use a fine abrasive like glass beads. I know suppliers can be found even on eBay.
Don,t underestimate containing the grit from the spray.
You could simply use the gun outside and run total loss but that would be expensive.

Regards

Dennis
arpurchase
#74 Posted : 21 November 2013 19:53:58

Rank: Super-Elite

Publisher Medal: Featured Build of the MonthActive Service Medal: 500 post active service MedalPurple Medal: Super active service medal for 1000 postsTurquoise Medal: Turquoise Medal for model making know-how contributionOutstanding Build: An award for an outstanding buildBuild-Diary Medal: Build-Diary Medal of HonourRed Medal: Red Medal
Groups: Registered

Joined: 27/09/2011
Posts: 15,196
Points: 45,687
Location: Dudley
BigGrin Hi Dennis
I thought these items may be more in line with peoples pockets aswell as for the grit from past experience its like sand on the beach gets every bloody whereBlink .It says best run at 50PSI but like you say some experimenting will be needed but I think il go with one of these myself
regards
AndyCool
Current builds:-C57,Zero, Lamborghini Countach, Caldercraft HMS Agamemnon,Robi,R2-D2, MFH Cobra .

Dennis
#75 Posted : 21 November 2013 20:19:13

Rank: Pro
Turquoise Medal: Turquoise Medal for model making know-how contributionBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 08/08/2013
Posts: 184
Points: 567
Location: Runcorn
Hi Andy,

Always worth being self sufficient. It will be a useful tool.
Be careful I have used sand on a rusty motorcycle frame and it was fine.
However the result depends upon metal being blasted, type of grit, air pressure and flow.
On those alloy parts it may be too abrasive although the small gun will help.

Let me know how you get on?

Regards

Dennis
arpurchase
#76 Posted : 21 November 2013 20:32:30

Rank: Super-Elite

Publisher Medal: Featured Build of the MonthActive Service Medal: 500 post active service MedalPurple Medal: Super active service medal for 1000 postsTurquoise Medal: Turquoise Medal for model making know-how contributionOutstanding Build: An award for an outstanding buildBuild-Diary Medal: Build-Diary Medal of HonourRed Medal: Red Medal
Groups: Registered

Joined: 27/09/2011
Posts: 15,196
Points: 45,687
Location: Dudley
BigGrin Hi Dennis
Just ordered one off fleabay at £29.99 plus free postage and says it will arrive Monday, I will show the results shortly
regards
AndyCool
Current builds:-C57,Zero, Lamborghini Countach, Caldercraft HMS Agamemnon,Robi,R2-D2, MFH Cobra .

Dennis
#77 Posted : 21 November 2013 21:24:29

Rank: Pro
Turquoise Medal: Turquoise Medal for model making know-how contributionBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 08/08/2013
Posts: 184
Points: 567
Location: Runcorn
Hi Andy,

Not a big investment.
One thing is the nozzle through which the abrasive passes does wear.
I use ceramic nozzles and they still wear. Although limited use like small
parts should mean slow wear depending upon nozzle material.

Regards

Dennis
jase
#78 Posted : 21 November 2013 21:41:05

Rank: Super-Elite

Publisher Medal: Featured Build of the MonthActive Service Medal: 500 post active service MedalPurple Medal: Super active service medal for 1000 postsTurquoise Medal: Turquoise Medal for model making know-how contributionOutstanding Build: An award for an outstanding buildBuild-Diary Medal: Build-Diary Medal of HonourRed Medal: Red Medal
Groups: Registered

Joined: 21/03/2010
Posts: 7,582
Points: 21,739
ceramic nozzles are certainly the best option if you are going to use it regularly.

I have never used this process in my model building, but I have purchased spares for equipment in a number of paint shops and the plastic nozzles get shot through very quickly in comparison. not sure if they are available for your kit Andy. As a general rule the best ceramic nozzles come from the US from my experience.
“Whenever you find yourself on the side of the majority, it is time to pause and reflect.”
-Mark Twain
arpurchase
#79 Posted : 21 November 2013 22:10:25

Rank: Super-Elite

Publisher Medal: Featured Build of the MonthActive Service Medal: 500 post active service MedalPurple Medal: Super active service medal for 1000 postsTurquoise Medal: Turquoise Medal for model making know-how contributionOutstanding Build: An award for an outstanding buildBuild-Diary Medal: Build-Diary Medal of HonourRed Medal: Red Medal
Groups: Registered

Joined: 27/09/2011
Posts: 15,196
Points: 45,687
Location: Dudley
BigGrin Hi Jase
The nozzle seams to be of metal construction looking at the enlarged pic on the one i have bought
regards
AndyCool Cool
Current builds:-C57,Zero, Lamborghini Countach, Caldercraft HMS Agamemnon,Robi,R2-D2, MFH Cobra .

Dennis
#80 Posted : 21 November 2013 22:45:59

Rank: Pro
Turquoise Medal: Turquoise Medal for model making know-how contributionBuild-Diary Medal: Build-Diary Medal of Honour
Groups: Registered

Joined: 08/08/2013
Posts: 184
Points: 567
Location: Runcorn
Hi Andy,

The main thing will be that nozzles are available as spares.
In use you can determine how fast they wear. Even the hardest of metals even ceramic still wears
However the wear rate may not be an issue short term.
Wear is to be expected since the abrasive passes through the nozzle. Worn nozzles result in reduced air flow
and therefore inferior blasting.

Regards

Dennis
Users browsing this topic
Guest (2)
11 Pages «<23456>»
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF | YAF © 2003-2009, Yet Another Forum.NET
This page was generated in 0.576 seconds.
DeAgostini