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 Post subject: EPP 痴得好差
PostPosted: 16 Sep 2004 11:23 am 

Joined: 20 Jul 2004 04:16 pm
Posts: 43
第一次試EPP, 吾係好識痴, 痴到好核突.

我痴既步驟係甘的.
1. 用乾布抺抺塊EPP
2. 噴一層3M係EPP 表面
3. 舖塊熱縮膠係EPP度
4. 用蕩斗加塊乾布點係4方形EPP 既4點上, 定左位先.
5. 1分鐘後, 再成塊EPP 用蕩斗加塊乾布蕩.

蕩完既EPP 無溶, 而且塊熱縮膠好緊貼係EPP度, 但就好巢, 吾知步驟有無出錯.

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 Post subject:
PostPosted: 16 Sep 2004 01:28 pm 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
熱縮膠 is not suitable for EPP


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 Post subject:
PostPosted: 16 Sep 2004 01:33 pm 
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Joined: 26 Feb 2004 05:31 pm
Posts: 741
Location: 沙田
呢種現像係因為D 3M77 作怪。燙係木面唔需要落 3M77,所以唔會見到呢個問題。

3M77 遇熱會溶﹐而且仲唔駛好高溫就溶。呢 3M77 溶左之後會變成潤滑劑﹐另塊燙膠黐唔到塊 EPP,自由收縮﹐所以巢晒。你預先燙實幾隻角既做法只可以用係唔落 3M77 既場合﹐譬如係燙落飛機木咁。

燙 EPP 一定要落 3M77﹐否則D燙膠係會黐唔實塊 EPP (講凍番個陣)﹐落 3M77 仲有一個好處就係如果你想煎番塊燙膠出黎﹐只要用燙斗加熱﹐整番溶D 3M77, 塊燙膠就可以好輕易同好完整咁煎番出黎﹐唔會整爛 EPP 既表面﹐跟手又可以再燙﹐唔駛再噴 3M77.

要燙 EPP 燙得靚﹐秘訣係避免落燙斗個陣辣到先前定位既地方﹐如果你要燙一塊 EPP 平板﹐定位既地方就應該選擇塊 EPP 板既垂直面(計厚度個個面)﹐而且唔可以只係定四點﹐而係好多點。

燙膠既選擇都好緊要架﹗我試過 Monokote, Ultracote(Oracover) 同 Skycote(雷記賣﹐應該係大陸野)﹐發覺 Ultracote(Oracover)最正﹐因為佢既收縮率係最高﹐唯一缺點係光靚度拍唔上 Monokote.

仲有一點要注意﹐就係千祈咪燙得太熱﹐唔係怕辣溶D EPP 或燙膠 (兩者都唔係咁易溶)﹐而係太熱燙出黎會巢。如果你放個燙斗係燙膠上面太耐﹐塊燙膠會勁收縮﹐塊 EPP 則會同時膨脹﹐一囉起個燙斗﹐你會見到塊膠拉得好行﹐個面好靚﹐會誤以為好掂。但當件野凍番個陣﹐塊燙膠係會首先冷卻同定形﹐但下面塊 EPP 仍然未凍﹐仲係係膨脹既狀態﹐塊 EPP 一路凍會一路收縮﹐但塊燙膠就唔再會﹐結果就係到塊 EPP 凍番晒個陣塊燙膠就會巢﹐到呢個地步就點整都救唔番﹐唯有煎走塊膠燙過。


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 Post subject:
PostPosted: 16 Sep 2004 09:10 pm 
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Joined: 26 Feb 2004 07:54 pm
Posts: 1660
Location: Tai Po, HK
嘩!!

YC, 你對燙膠既了解程度,真係到咗專業級水準 :D

拍掌 !!!! 拍掌 !!!!


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 Post subject:
PostPosted: 16 Sep 2004 09:17 pm 
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Joined: 26 Feb 2004 05:31 pm
Posts: 741
Location: 沙田
專也鬼業丫﹐衰左好多次就真。


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 Post subject:
PostPosted: 16 Sep 2004 10:58 pm 
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Joined: 26 Feb 2004 03:51 pm
Posts: 3624
Location: Hong Kong
其實而家己經好少人同啲EPP機燙膠,大部份人都用有顏色嘅膠紙黐上去,就好似阿子明啲產品、Bee、Bat等等都喺用膠紙,一來無膠水比較輕,二來又容易黐,我曾經用咗十分鐘左右就黐好隻Minibee,方便快捷,玩咗隻機幾個月,啲膠紙都無匕落蹟像。


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 Post subject:
PostPosted: 16 Sep 2004 11:08 pm 

Joined: 20 Jul 2004 04:16 pm
Posts: 43
YC,
好詳細呀. 勁, thx a lots.

今日再研究過, 原來張熱縮膠有張膠紙係底, 只要莫開張膠紙包就ok.

但另一個問題黎啦, 因為EPP 本身有紋, 當熱縮緊貼住EPP每一寸既肌膚時, d紋就現矖出黎, 有物辦法解決呀? 舖2層熱縮膠可以嗎?

而張熱縮膠係o係雷x行買的, 牌子應該係Solarfilm, made in England, 係特價區發現, 一卷有2M $20一卷. 這隻牌子好嗎?

我係雷x行都見到Oracover, 但無問價錢, 貴嗎?


Last edited by laum on 17 Sep 2004 01:34 am, edited 1 time in total.

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 Post subject:
PostPosted: 16 Sep 2004 11:12 pm 

Joined: 20 Jul 2004 04:16 pm
Posts: 43
Stanley,
thx. 想問邊度有得賣呢種膠紙? 如貼機頭部份, 因為係個curve黎, 點樣可以收緊張膠紙而貼得平滑呀? thx.


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 Post subject:
PostPosted: 16 Sep 2004 11:41 pm 
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Joined: 26 Feb 2004 03:51 pm
Posts: 3624
Location: Hong Kong
我D膠紙都喺子明比嘅,我亦都喺某些書局和鴨記見過。至於黐D斜位,亦都好容易,只要將D膠紙剪細張D黐上去就,好實架。


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 Post subject:
PostPosted: 16 Sep 2004 11:57 pm 

Joined: 20 Jul 2004 04:16 pm
Posts: 43
thx Stanley,
甘想問邊間文具店有得賣? 叫物膠紙呀?


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 Post subject:
PostPosted: 17 Sep 2004 01:22 am 

Joined: 31 Jul 2004 03:31 am
Posts: 47
Location: K.C
:arrow: 封箱膠紙 :roll: cheap繞幾個大洋、名貴3m就2拾幾、 8)


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 Post subject:
PostPosted: 17 Sep 2004 01:30 am 

Joined: 31 Jul 2004 03:31 am
Posts: 47
Location: K.C
:roll: 請看topic :arrow: 想架机靚 :wink:


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 Post subject:
PostPosted: 17 Sep 2004 11:49 am 

Joined: 20 Jul 2004 04:16 pm
Posts: 43
thx, 小克,
等我睇睇先.


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 Post subject:
PostPosted: 18 Sep 2004 12:04 am 
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Joined: 26 Feb 2004 05:31 pm
Posts: 741
Location: 沙田
laum wrote:
...., d紋就現矖出黎, 有物辦法解決呀? 舖2層熱縮膠可以嗎?


Solarfilm 有可能係歷史最悠久既燙膠﹐70 年代就有﹐我十幾年前玩油機個陣用過﹐唔掂﹐呢角位易甩﹐有顏料個面如果互相掂到﹐唔駛加熱都會即刻自動黐埋﹐煎唔番開﹐整到我發火﹐所以只係用過一次。事隔咁多年﹐Solarfilm 已經有好多新產品﹐好似 Solartex, Solarfilm lite 咁﹐原裝 Solarfilm 有無改良就唔清楚。

Solarfilm 有個好大既好處﹐就係輕同薄﹐比較容易過曲面。用係對重量敏感既機種如熱氣流機就 fit 晒﹐但又因為佢薄﹐燙落木就現木紋﹐燙落 EPP 就現粒粒紋。燙兩浸膠係解決唔到問題﹐因為兩浸燙膠中間會困好多氣泡﹐仲肉酸。如果要求靚多過要求輕﹐可以用較厚既燙膠﹐好似 Oracover 咁。但價錢會比 Solarfilm 貴。

用膠紙勝在簡單實用﹐但講靚就肯定唔及燙膠。膠紙既顏色好透﹐顏色選擇又少﹐最大既缺點係貼完會有好多一間間既駁口﹐唔靚﹐要做圖案又限制多多﹐通常都只可以做D簡單既間條花。

下面係我隻 EPP 機, 用膠紙係好難做到呢類較複雜既圖案.

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 Post subject:
PostPosted: 18 Sep 2004 12:35 am 
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Joined: 26 Feb 2004 07:54 pm
Posts: 1660
Location: Tai Po, HK
Laum,

YC 隻 EPP机 D燙膠花紋係少有既極品。
如果你頭幾次做唔到咁既水準'千其唔駛灰心。
是關九成机友都做唔到咁正。

我建議你先做 D 簡單啲既花。
不過上燙膠前最好係用沙紙省吓 D EPP 先。
如果要再平滑D, 可以用 Sparking 打底'再用沙紙省滑,然後才上燙膠。


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 Post subject:
PostPosted: 18 Sep 2004 02:32 pm 

Joined: 26 Jun 2004 09:59 am
Posts: 204
Location: Hong Kong
What is Sparking and where can I buy it? Thanks!


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 Post subject:
PostPosted: 18 Sep 2004 11:19 pm 
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Joined: 26 Feb 2004 07:54 pm
Posts: 1660
Location: Tai Po, HK
WingDragon wrote:
What is Sparking and where can I buy it? Thanks!


係唔係叫做 Sparking 呢! 唔記得啦。 係巳前一位師兄教用既。
我係"實惠"買過一支。
牙膏咁既白色漿‧D人用黎填補牆身既縫。


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 Post subject:
PostPosted: 19 Sep 2004 01:19 am 

Joined: 31 Jul 2004 03:31 am
Posts: 47
Location: K.C
:roll: 福粉、菜膠、石膏?牆身灰。用平底漿?填EPP會唔會重、會唔會爆灰呢、如果OK、又確係別出心裁喎 :)


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 Post subject:
PostPosted: 04 Oct 2004 09:10 pm 

Joined: 20 Jul 2004 04:16 pm
Posts: 43
今日去左雷x行問老闆物牌子既燙膠賣, 佢地只有 the world model 既lighTex 同 ToughLon, 甘想問Ultracote(Oracover)邊度有得賣呀?

跟住我問如果EPP, lighTex 定 ToughLon 好d, 佢唸左一陣話EPP 吾適合用燙膠. 跟住我話燙之前會用3M 噴噴個面, 甘佢又唸左一陣, 就話lighTex arm d, 因溥身d, 最後我驚買錯, 所以無買, 想問EPP 係咪用溥身d好過厚身呢?


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 Post subject:
PostPosted: 06 Oct 2004 10:03 am 

Joined: 08 Jun 2004 07:14 pm
Posts: 92
Location: TaiPo/TuenMun
He was right, EPP is really not necessary and suitable to do film cover. I feel you both like to fly and build planes, I suggest you to find some balse kit to try, you may think not the right time to fly a balsa plane but at least you can enjoy to build a nice looking plane first.


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