Modifying my Static Grass Applicator

Discussion in 'Scratchin' The Surface' started by Gary, Mar 15, 2020.

  1. Gary

    Gary Wants more time for modelling.... Staff Member Administrator

    Messages:
    5,717
    Likes Received:
    1,761
    Joined:
    Dec 5, 2015
    Some of our member here will remember the static grass applicator I built many, many years ago. In a matter of fact, it was prior to this forum starting ! My applicator was made from PVC pipe and fittings, fly wire and a negative ion generator, a momentary push button and powered originally by a 9V battery, later to a various voltage transformer.


    No having a layout that fits snug into the corners of a small room, I found that it is damn difficult to apply grass to the corners of the layout due to the diameter of the applicator head. I need to apply grass to the corners but I can not pull the layout out from the walls.

    So, what to do...??

    Simple answer is to modify the applicator with removable heads. But I hear you say that there is a permanent wire connected between the negative ion generator and the mesh..! o_O

    A quick trip down the road to Jaycar and the hardware, I came home with all the bits I need to modify the original applicator...

    A piece of mesh (stainless steel), a 50mm PVC coupling and a 50mm PVC end cap, 2 x male RCA plugs and 1 x female RCA plug. I already had a length of 50mm PVC pipe left over from scratch building grain silos.


    First of all, the end cap needs the blank removed, leaving an inside rim for the mesh to sit on. This was drilled for a starting hole and then with a copping saw was used to remove the bulk, followed by some sanding. The mesh was cut to size with scissors.


    Take a male RCA plug, pull apart and solder an insulated wire (100mm in length) to this. Refit the rubber sleeve. Now strip the other end of the wire approximately 12mm in length. Twist this and feed through a hole in the mesh to one side, loop the wire and feed back through. Twist this wire together and solder in place.


    This shall look like this now, with a 50mm length of 50mm diameter PVC pipe placed into the cap. This piece of PVC pipe will secure the mesh in place quite tightly as it is pressed all the way in.


    No add the coupling to this and as can be seen, the RCA plug sits proud of the new mesh head.


    Next is to cut the wire that runs from the negative ion generator to the mesh on the original unit. Strip the end of wire on the mesh head end and secure the male RCA plug, same as the 50mm head.

    Strip the end of wire that now hangs free from the negative ion generator and solder on the female RCA plug.

    What we have now is two different sized heads that are removable. :D


    So, does it work ?? You betcha ! This is from the 50mm head...


    Now I can get onto grassing the back corners of my layout ! :thumbs:

    Cheers, Gary.
     
  2. York Paul

    York Paul Staff Member Moderator

    Messages:
    4,639
    Likes Received:
    4,965
    Joined:
    Aug 20, 2017
    Brilliant stuff Gary and a practical cost effective solution too I might add. I saw a static box thingy once for adding leaves to trees, apparently it works in the same way but the material/scatter/flock is placed in the flat top of this box and an electrode connected to the tree armature, when switched on and the armature brought within range all the flock / leaf stuff flies off the box top and sticks to the branches of the pre glued armature... All very clever I thought but expensive to purchase.:scratchchin:
     
    Andy_Sollis likes this.
  3. Mark4mm

    Mark4mm Full Member

    Messages:
    305
    Likes Received:
    319
    Joined:
    Nov 9, 2019
    Gary that’s a fine looking static grass applicator and the best bit it’s hand built with a big cash saving.:thumbs:
     
  4. Andy_Sollis

    Andy_Sollis Full Member

    Messages:
    1,998
    Likes Received:
    2,035
    Joined:
    Aug 4, 2018
    We have some of the bits ready.. I’ll soon be making one myself!
     
    Gary likes this.
  5. Gary

    Gary Wants more time for modelling.... Staff Member Administrator

    Messages:
    5,717
    Likes Received:
    1,761
    Joined:
    Dec 5, 2015
    Thanks Paul. :thumbs: I too have seen that reverse applicator. Can't remember if it was WWS or another supplier... :scratchchin:

    Cheers, Gary.
     
    Andy_Sollis likes this.
  6. Gary

    Gary Wants more time for modelling.... Staff Member Administrator

    Messages:
    5,717
    Likes Received:
    1,761
    Joined:
    Dec 5, 2015
    Originally the cost was around the $28.00AUD, or about £15.00. The additional piece I made cost about $7.00 AUD (£4.00)...

    Cheers, Gary.
     
    Andy_Sollis likes this.
  7. Bernie

    Bernie Full Member

    Messages:
    20
    Likes Received:
    8
    Joined:
    Sep 29, 2020
    Instructions how to make a static grass applicator by Luke Towan. very impressive modeller with great presentation skills. I am at base board stage, but will try this when I get to the decorative stage.
     
    jakesdad13 and Andy_Sollis like this.
  8. Gary

    Gary Wants more time for modelling.... Staff Member Administrator

    Messages:
    5,717
    Likes Received:
    1,761
    Joined:
    Dec 5, 2015
    Yes, that is identical to the way I made my applicator. Many years ago, I drew up plans for these and they were handed out at various exhibitions I attended. Some of our members here my remember when I posted these plans on YMRC, many years ago....


    Cheers, Gary.
     
    Bernie, Peter Cross and mikejh like this.
  9. Bernie

    Bernie Full Member

    Messages:
    20
    Likes Received:
    8
    Joined:
    Sep 29, 2020
    Thanks Gary, this looks very easy to do, sometimes a picture is better than a video that one has to continually stop at each stage. And as the rule goes, I actually threw out a length of 50mm PVC yesterday. :facepalm: No where ready for static grass yet, and am trying hard to not keep stuff in case it comes handy. I have stored that length of pipe for about 20 years. Regards Bernie.
     
  10. Gary

    Gary Wants more time for modelling.... Staff Member Administrator

    Messages:
    5,717
    Likes Received:
    1,761
    Joined:
    Dec 5, 2015
  11. jakesdad13

    jakesdad13 Staff Member Moderator

    Messages:
    3,809
    Likes Received:
    1,382
    Joined:
    Dec 14, 2015
    Just a quick addendum to Garys build, when I built mine here in the UK, I couldn't find the negative ion generator type that he used, the one I bought had two outlet wires with carbon brushes on the ends. I cut those off and stripped the wire back about 10mm and twisted them together before soldering the positive wire to them. Works a treat!

    Cheers, Pete.
     
  12. Davoetype

    Davoetype Full Member

    Messages:
    594
    Likes Received:
    210
    Joined:
    Jun 14, 2016
    Oatley are quite reliable and are more than happy to post to overseas destinations.

    Cheers

    and happy modelling

    Richard
     

Share This Page