Jump to content

IGNORED

Fiberglass glove box


Seppi72

Recommended Posts

Has anyone ever seen someone make a new glove box insert out of fiberglass?  The OEM unit is simply "cardboard" that is stapled and glued together with a lot of right angles and "sharp" corners. 

I figure that if I make a plug of the inside of the box using expanding polyurethane foam in a polyethylene film bag I could then fabricate a decent and more robust box from that.  In fact, if I wished to, I could then continue to shape the plug so I could make modifications that would allow for an even deeper and perhaps compartmentalized box that would still accommodate my Vintage Air A/C lines.20211005_134744[1].jpg20211005_134802[1].jpg20211005_134823[1].jpg

Link to comment
Share on other sites

I am not sure about a fiberglass one though these are out there...

Aluminum ($109-129):  https://skillard.com/product/datsun-240z-aluminum-glove-box/

                  ($95-115):  https://bhjautomotive.com/shop/interior/240z-aluminum-glove-box/

Paper/cardboard (like stock) ($30):  https://www.thezstore.com/page/TZS/PROD/40-3351

                                                 ($50):  https://zcarsource.com/glove-box-compartment-240z-70-73-new/

                                                 ($40):  https://zcardepot.com/products/glove-box-liner-240z-1970-73

                                                 ($30):  https://www.datsun-garage.com//collections/datsun-240z-260z-280z-s30-interior/products/glove-box-1970-73-240z

                                                 ($45):  https://jdm-car-parts.com/products/glove-box-inner-for-datsun-240z?variant=774861081

 

There may be some others out there.  I'm not sure what you are shooting for though for $40-$50 for the stock type that may be a good enough solution for you.

 

  • Like 1
Link to comment
Share on other sites

  • 4 weeks later...

@Seppi72 Hello, my 72 doesn ´t have the glove box insert and I was also looking at alternatives other than the aluminum or cardboard ones, but instead of fiberglass I was thinking that since I have access to consumer grade thermoforming equipment I could try it with styrene sheets or laminated PVC which I can easily find in local crafts stores, but I would need a (more or less) complete piece or object of simmilar size to use as a mold or pattern. Do you think you could take some mesaurements of your cardboard  insert and post them here? It doesn ´t have to be super precise or of every shape and angle, just the most general outline measures so I can make a mock up and mold the piece (or pieces) from it.

Link to comment
Share on other sites

Sure.  I can give you the internal dimensions as well as the dimensions of the flanges that are used to attach the box to the dashboard.  I'll harken back to my high school class in mechanical drawing and try to produce a mostly-proper, 3-view, engineering drawing.  You will have to radius the corners so your sheet does not tear while you are draping it over the plug.  But, even if it does, you can always fill in or build up those gaps later with bondo.

And, while it's great for you having access to a thermoformer, I would not rely on polystyrene (PS) to do the job.  Think about using 2-3 mm ABS instead.  An alternative would be to externally reinforce your PS box with some fiberglass.

Link to comment
Share on other sites

10 hours ago, julitoMX_1964 said:

@Seppi72 Hello, my 72 doesn ´t have the glove box insert and I was also looking at alternatives other than the aluminum or cardboard ones, but instead of fiberglass I was thinking that since I have access to consumer grade thermoforming equipment I could try it with styrene sheets or laminated PVC which I can easily find in local crafts stores, but I would need a (more or less) complete piece or object of simmilar size to use as a mold or pattern. Do you think you could take some mesaurements of your cardboard  insert and post them here? It doesn ´t have to be super precise or of every shape and angle, just the most general outline measures so I can make a mock up and mold the piece (or pieces) from it.

I remember seeing where someone (probably in this group) has unstapled one and drawn up detailed measurements.

Link to comment
Share on other sites

3 hours ago, texasz said:

I remember seeing where someone (probably in this group) has unstapled one and drawn up detailed measurements.

If I remember correctly, and there's no guarantee that happens consistently, several years ago someone did record all the measurements and then sent them to a forum member who planned to reproduce inserts to offer to the group.  Measurements or a drawing were never shared on the forum and there was a bit of discussion about posting them on the forum when a member was going to the effort and expense of recreating inserts for sale.

I also need a new glove box insert for my Z.

Link to comment
Share on other sites

@Seppi72  I didn´t mean polistyrene (the white porous stuff that ´s used in packaging, etc..) but styrene plastic, the material most car and airplane models are made of. I think each material goes by diferent names according to each country. Anyway I´ll be very grateful if you can supply the measurements. I really don´t know if what I intend to do will be succesful so I can´t make any promises, , but I´m willing to try and report back here what the results are. Obviously if the benefit can be shared with others all the better.

  • Like 1
Link to comment
Share on other sites

I understood that you meant PS sheet material and not PS foam, which is used, among other things, for the shallow trays that hold cuts of meat in the supermarket here in the U.S.

I spent the bulk of my chemistry R&D career in the plastics and polymer industry and a lot of that was making material recommendations for all sorts of applications from automotive to telecommunications to medical devices to aircraft interiors to farm equipment.

In my opinion, plain PS will likely be too brittle in this glove box application, particularly it there will be substantial items like tire pressure gauges or pocket knives banging around when you're driving on a twisty road.  You will be better off using ABS (acrylonitrile/butadiene/styrene copolymer), which has much better impact performance compared to PS because of the butadiene (rubber) content.  It's working temperature for thermoforming will not be too much higher than for PS.

I'll have initial dimensions and a sketch for you here later today so you can get started fabricating a plug.  A proper drawing will come this weekend.

  • Like 4
Link to comment
Share on other sites

Sorry, it took me a lot longer than I anticipated to getting to doing the measurements.  And now that I have them probably to within + 1 mm -- the 2 mm cardboard is somewhat distorted after 50 years -- I need to get them onto a sketch and then a drawing.  I wish I had my CAD software from where I used to work, but it will have to be freehand.  And I haven't done a perspective drawing in ages.  So, it's going to take some time.

The glove box is distorted from being rectangular and what makes it almost diabolical is that there are "cut ins" along both of the short top edges and they are not symmetrical.  They are to avoid interfering with the duct work to the passenger eyeball vent.  As such, those dimensions are not terribly critical.

To get you started, however, let me suggest that you begin with a block of rigid, open-cell foam that is cut to be 306 mm x 140 mm x 200 mm.  You will then need to shave and contour that block to get the final dimensions that I shall provide in the drawing.  Once that's done, you can "harden up" the finished plug by applying polyester resin to the foam.

Let the fun begin.

Edited by Seppi72
corrected typo
  • Like 1
Link to comment
Share on other sites

Thanks! Iwas thinking PS because the machine I can make these tests with is not a fully professional or industrial grade one, it´s mainly for decorative crafts and stuff like that, but I can have access for free and can do some experiments. I´m not sure if it´ll be strong enough for ABS (if the sheet is thin enough, maybe, I don´t know)...and even if it wasn ´t or for some other reason I had to settle with PS, I was thinking about reinforcing the piece afterwards with fiberglass for example. Maybe the thermoformed piece can serve as a mold for actual fiberglass castings? Anyway this will be trial and error...and basically for the fun of it.

Link to comment
Share on other sites

OK.  How thick is the PS sheet material?  The cardboard is 2 mm.  I think it would be not problem to reinforce the PS shell with fiberglass afterwards because there do not appear to be too many, if any, critical dimensions for this part.  I mean, after all, Nissan used cardboard.  Geesh.

Link to comment
Share on other sites

I'm happy to report that ETI4K has now taken my initial glove box dimensions and created 3-D renderings that he and I will now "clean up" and create forming jigs. Once we get that done we should be able to recommend processes (1) for julitoMX_1964 to try with his thermoforming machine and (2) for me to try with FRP (fiber-reinforced polyester, the proper term for what folks colloquially call fiberglass).

Link to comment
Share on other sites

  • 3 weeks later...

I had some free time today so I decided to take apart the glove box from my 12'70 parts car to make a 3D model and flat patterns for templates. I also have a pristine glove box from the 7'70 I'm restoring. Between the two I should be able to do this quite accurately. I will upload the results to the cad files section in downloads on this site and also post updates here as I make progress. Here is what I have done so far...

image.png

  • Like 1
Link to comment
Share on other sites

Thanks, CanTechZ.  What you're doing will be quite helpful to julitoMX_1964 as I think it will be better for him to cut the top, back and bottom parts out of one piece of PVC or ABS sheet and bend it as needed at the edges.  I have been working with ETI4K to produce mold core models for julitoMX-1964's thermoforming the side pieces and for me to do one-piece FRP lay-ups of the whole box.

Link to comment
Share on other sites

  • 2 weeks later...

Surgery was a breeze: in surgery at 11:30 a.m. and discharged at 5 p.m.  Whatever surgical pain I have is no worse that what the joint pain was beforehand -- and at least I can look forward to this pain going away.  Getting around the house just fine without a walker but have one for outdoors.  Hoping to be in my shop media blasting a rear strut by the weekend as my Eibach springs will be getting here on Friday so I can start to assemble those bits.  Techno Toy Tuning rear suspension parts arriving this week as well.  Those will likely have to wait for a January install when I can easily get up and down from a creeper.  Goals, goals, goals.

Looking forward to seeing your lay-flats and if and how they might differ from what ETI4K has done.  They'll probably be with a millimeter of each other.

  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Who's Online   1 Member, 0 Anonymous, 100 Guests (See full list)

×
×
  • Create New...

Important Information

By using this site, you agree to our Privacy Policy and Guidelines. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.